Good morning! It’s Sunday — Review Day. This is where the real learning happens: going back over the week’s words with fresh eyes and seeing how much has stuck. Research on spaced repetition shows that reviewing material after 1-7 days produces dramatically better long-term retention than any single-session study. This is that review. Let’s see what you remember.
📋 This Week’s Top 5 Words — Quick Check
Before you read the details, try to recall each word’s meaning. Cover the Vietnamese column and test yourself.
| Word | IPA | Vietnamese | Day |
|---|---|---|---|
| refactor | /ˌriːˈfæktər/ | cải tổ code mà không thay đổi chức năng | Mon |
| hallucinate | /həˈluːsɪneɪt/ | ảo giác / tạo ra thông tin sai (AI) | Tue |
| facilitate | /fəˈsɪlɪteɪt/ | tạo điều kiện / giúp diễn ra thuận lợi | Thu |
| visibility | /ˌvɪzɪˈbɪlɪti/ | khả năng hiển thị / độ nhìn thấy | Fri |
| banter | /ˈbæntər/ | nói đùa vui vẻ / trêu chọc thân thiện | Sat |
🌟 Word Deep Dives: The 5 Words of the Week
1. Refactor /ˌriːˈfæktər/
Core meaning: To restructure existing code without changing its external behavior. You fix the “how” without touching the “what.”
Why it stuck: This is a word engineers use daily — in PRs, in standup, in planning. If you can’t say “let me refactor this function” confidently, you’re missing a core vocabulary item.
3 sentences to say aloud:
- “Before we add the new feature, let’s take a day to refactor the authentication module — it’s getting messy.”
- “Refactoring doesn’t add business value directly, but it’s the difference between a codebase you can change and one that fights back.”
- “She spent the sprint refactoring the legacy payment system, and now adding a new payment method takes hours instead of weeks.”
2. Hallucinate /həˈluːsɪneɪt/
Core meaning in AI context: When an LLM generates plausible-sounding but factually incorrect information, presented with confidence as if it were true.
Why it matters: This word is now in mainstream vocabulary. Non-engineers use it about AI. If you’re presenting to stakeholders about AI systems, you need to be able to explain hallucination clearly and without jargon.
Quick explanation for non-technical audiences: “The model hallucinated — it gave us a detailed, confident answer that turned out to be completely made up. It’s like asking someone a question and they don’t say ‘I don’t know’ — they invent a believable answer instead.”
3 sentences:
- “Always verify AI-generated facts — models hallucinate more when asked about recent events, specific numbers, or citations.”
- “We had a hallucination in production: the AI confidently told users about a feature we don’t have.”
- “Reducing hallucination is the core challenge of enterprise AI deployment — confidence doesn’t equal accuracy.”
3. Facilitate /fəˈsɪlɪteɪt/
Core meaning: To make a process easier or help it happen. In professional settings, it often means running a meeting or discussion so that others can participate effectively.
The subtle distinction: A presenter talks to people. A facilitator creates conditions for people to talk to each other and reach an outcome. This distinction matters in meetings.
Usage patterns:
- “facilitate a meeting” — run it so participants can contribute
- “facilitate a decision” — guide the process to a conclusion
- “facilitate collaboration” — make it easier for people to work together
3 sentences:
- “My role in this meeting is to facilitate — I’m not here to give answers, I’m here to help the team reach alignment.”
- “Good facilitators are rare. They know when to speak, when to listen, and how to surface the unspoken objections in the room.”
- “Can you facilitate the retrospective this sprint? We need someone who isn’t emotionally invested in the outcome.”
4. Visibility /ˌvɪzɪˈbɪlɪti/
Core meaning: How well something (or someone) can be seen, noticed, or understood. In career context: how aware others are of your work and contributions.
Two distinct uses:
- Technical: “We need better observability and visibility into what the system is doing.” (monitoring, dashboards)
- Career: “She has great visibility with senior leadership — they know her name and her work.” (professional presence)
3 sentences:
- “The biggest career mistake I made was assuming that doing good work was enough. Visibility is a separate skill.”
- “We added a metrics dashboard to give the product team visibility into API performance.”
- “Visibility with decision-makers doesn’t happen by accident — you have to show up, speak up, and follow through.”
5. Banter /ˈbæntər/
Core meaning: Playful, friendly teasing and witty back-and-forth between people who are comfortable with each other. The verbal equivalent of a friendly shoulder tap.
Why tech people need this: English-speaking work culture — especially in UK and US tech companies — uses banter as a social bonding mechanism. Teams with good banter often have higher trust. Being able to participate (even a little) signals comfort and belonging.
The rule of thumb: If you’re not sure whether a comment is banter or criticism, look for the smile and the context. Banter has warmth; criticism doesn’t.
3 sentences:
- “Don’t be offended — that’s just the team’s banter. They tease everyone they like.”
- “Good banter in a Slack channel keeps the team together during stressful sprints.”
- “She’s quick with banter — she’ll respond to any joke with something even funnier.”
💡 Idiom Review: The 3 Best Idioms of the Week
1. “Yak Shaving” (Monday — Technical)
Meaning: Doing a long chain of seemingly necessary tasks that keep you from your original goal. Named after a pattern where task A requires task B, which requires task C… which somehow ends with you shaving a yak.
Example this week: “I just wanted to add a logging function, but I ended up yak shaving for three hours — I had to update the dependency, which broke the build, which required upgrading Node, which…”
Remember it: When you realize you’re two tasks away from your original task, stop and ask: “Am I yak shaving?“
2. “Get the Ball Rolling” (Thursday — Professional Communication)
Meaning: To start something; to take the first action that gets a process moving.
Example this week: “We’ve been talking about the migration for months. Let’s get the ball rolling — I’ll draft the technical spec this week.”
The power of this phrase: It implies momentum. Saying “get the ball rolling” suggests that once it starts, it will keep moving — it’s a gentle way to push for action without sounding like you’re ordering someone.
3. “Go with the Flow” (Saturday — Social English)
Meaning: To be flexible, adaptable, and accepting of whatever happens — not resisting or trying to control outcomes.
Example this week: “I didn’t plan much for this sprint — I’m going with the flow and picking up whatever the team needs most.”
When to use it: Useful when describing your flexibility, reassuring a stressed colleague, or explaining how you handle uncertainty. (“I’m pretty relaxed about the timeline — I’ll go with the flow.”)
🎁 Bonus: New Idiom of the Week — “Back to Square One”
Meaning: Starting completely over from the beginning because a previous approach failed. Square one is the starting position.
Vietnamese: Bắt đầu lại từ đầu / quay lại vạch xuất phát
Origin: The phrase likely comes from early board games where landing on certain squares sent you back to the beginning. It entered common English usage in the 1950s via radio sports broadcasting.
3 examples:
- “The client rejected the entire design — we’re back to square one.”
- “The refactor broke too many things. We reverted and we’re back to square one, but at least we know what not to do.”
- “After six months of development, the pivot means we’re essentially back to square one. It’s frustrating, but sometimes that’s how product discovery works.”
Related: “Start from scratch” (same meaning, slightly more casual)
✏️ Sunday Challenge: Full-Week Self-Test
Try this without looking at the definitions above. Write your answer first, then check.
Fill in the blank (use the word or phrase that fits best):
- “The AI model _______ a reference — it cited a paper that doesn’t exist.”
- “I need someone to _______ our kickoff meeting — we have 15 people and no agenda.”
- “The demo failed completely. We’re _______ and have 48 hours to fix it.”
- “She has strong _______ with the CTO — he mentions her work in all-hands meetings.”
- “Don’t stress about the plan changes — just _______ and we’ll figure it out together.”
- “I love the _______ in our team Slack — it makes the hard weeks bearable.”
✅ Answers
- hallucinated
- facilitate
- back to square one
- visibility
- go with the flow
- banter
🔊 Pronunciation Drill: The Week’s 5 Words Together
Read this paragraph aloud — slowly at first, then at natural speed. Aim for 3 clean runs.
“When an AI system hallucinates, the first instinct is to panic — but the right move is to facilitate a calm debrief, refactor your prompting strategy, and go with the flow while you iterate. Visibility into the model’s reasoning helps. And if your team can maintain some good banter through the chaos, even better.”
Stress pattern guide:
- ha-LU-ci-nate (stress on second syllable)
- fa-CIL-i-tate (stress on second syllable)
- RE-fac-tor (stress on first syllable)
- vi-si-BIL-i-ty (stress on third syllable)
- BAN-ter (stress on first syllable)
📺 Review Resource: The Vocabulary Loop
The best way to consolidate this week’s words is not to study them — it’s to use them. Here’s a loop that takes 10 minutes:
- Pick 2 words from this week that you found hardest to use naturally
- Go to YouGlish (youglish.com) and hear native speakers use each one in context
- Shadow one sentence you hear — repeat it exactly, matching rhythm and stress
- Write one original sentence using that word in a context from your actual work
The goal is not memorization. It is making the word available when you need it in a real conversation — not when you’re studying, but when you’re presenting, when you’re in a meeting, when someone asks your opinion.
🗓️ Next Week Preview
| Day | Topic | Focus |
|---|---|---|
| Monday | Technical English | Version control & code review vocabulary |
| Tuesday | AI & ML | Agentic AI vocabulary — orchestration, harness, context window |
| Wednesday | Architecture | Database & storage patterns |
| Thursday | Professional Communication | Stakeholder management phrases |
| Friday | Career & Growth | Feedback and performance review language |
| Saturday | Social English | Weekend plans and social invitations |
| Sunday | Weekly Review | Top 5 from next week |
Good work this week. Five new words, three idioms, and a bonus phrase — that’s a solid vocabulary week. Rest today, but try to use at least one of these words in a real conversation before Monday. Language sticks when it lives outside the study materials.