It happens to everyone: the interviewer asks something you simply don't know, and your
heart races. Here's the most important thing to understand — how you handle not knowing
matters more than knowing. Interviewers don't expect you to know everything, especially
as a fresher. They're watching how calm, honest, and willing to learn you are. With a few
ready phrases, you can turn a scary moment into a point in your favour.
Quick answer: Stay calm, be honest, and show willingness. Say something like "That's
a good question — I'm not fully sure, but here's how I'd think about it…" Never lie,
never panic, and never go silent. Honesty plus effort beats a fake answer every time.
Why this moment is not a disaster
A single "I don't know" rarely costs you the job. What hurts is panicking, making up a
wrong answer, or freezing in silence. Interviewers actually respect a candidate who can say
"I'm not sure" calmly and then show how they'd approach the problem. It signals honesty
and a learning attitude — exactly what they want in a fresher.
Your 3 calm options
When you don't know, pick one of these:
- Be honest, then attempt. Admit you're not certain, then share how you'd think about
it or what you do know nearby. - Be honest, show willingness to learn. If it's a skill or tool you don't know, say
you haven't used it yet but you're a fast learner. - Ask for a moment, or clarify. Take a breath, or ask a clarifying question to make
sure you understood.
All three keep you honest and composed.
Ready-to-use phrases
To buy a moment:
- "That's a good question — let me think for a second."
- "Let me take a moment to gather my thoughts."
To be honest but still attempt:
- "I'm not fully sure, but here's how I'd approach it…"
- "I haven't faced that exactly, but based on what I know, I'd say…"
- "I don't want to guess blindly, but my best thinking would be…"
To show willingness to learn (for a skill/tool you don't know):
- "I haven't worked with that yet, but I learn new tools quickly and I'd be glad to pick it
up." - "That's not something I've used so far — I'd love the chance to learn it."
To clarify:
- "Just to make sure I understand — are you asking about X or Y?"
- "Could you explain a little more about what you mean?"
Sample answers you can adapt
Honest, then an attempt:
"That's a good question. I'm not completely sure of the exact answer, but the way I'd
think about it is… [your reasoning]. I'd also double-check it properly before acting."
Don't know a tool:
"I haven't used that software yet, to be honest. But I picked up a new tool in a week for
my final-year project, so I'm confident I can learn this quickly too."
Need a clarification:
"Just to make sure I answer the right thing — are you asking about how I'd plan it, or how
I'd actually do it?"
Say this, not that
- ❌ Going completely silent and staring down. (The silence feels worse than the "I don't
know.")
✅ Use a calm phrase: "Let me think for a second." - ❌ Making up a confident but wrong answer. (Interviewers usually catch it, and it damages
trust.)
✅ Be honest, then show your thinking or willingness to learn. - ❌ "I have no idea, sorry." and stopping. (Closes the door.)
✅ Add effort: "…but here's how I'd approach it" or "…but I learn quickly." - ❌ Apologising over and over. (Makes you look less confident.)
✅ One calm acknowledgement, then move forward.
Common mistakes to avoid
- Panicking. Your body language matters — take a breath and stay steady.
- Lying or bluffing. A wrong answer delivered confidently can hurt more than honesty.
- Long, awkward silence. Fill it with a thinking phrase, not dead air.
- Letting one question ruin the rest. Recover, refocus, and answer the next one well.
When you partly know the answer
Sometimes you don't know the full answer but you know a piece of it. Don't throw the
whole question away — share what you do know:
"I'm not sure about the entire process, but I do know the first step would be… and from
there I'd work out the rest."
This shows honesty and effort, which is exactly the combination interviewers want.
Partial knowledge, shared confidently, beats a blank "I don't know" every time.
Say it out loud (2-minute practice)
These phrases only help if they come out automatically under pressure — so drill them:
- Pick three phrases above (one to buy time, one to be honest, one to show learning).
- Say each out loud five times until it feels natural.
- Then imagine a tough question and practise answering with: "That's a good question —
I'm not fully sure, but here's how I'd think about it…" - Record it once. Do you sound calm and steady, not panicked?
If you have no one to practise with, you can
rehearse these calm-under-pressure phrases with a 24/7 AI partner
that never judges you. The more you say them aloud, the more naturally they'll come when it
counts.
A quick word on staying calm
The fear here isn't really about English — it's about being "caught out." But remember: not
knowing one answer is completely normal, and handling it with honesty makes you look mature
and trustworthy. Take a slow breath, use your phrase, and keep your voice steady. You don't
need perfect English to stay composed; you need a few calm lines ready. Your goal is
communication, not perfection.
Mini-FAQ
Is it bad to say "I don't know" in an interview?
No — if you say it calmly and add effort. Honest "I'm not sure, but here's my thinking" is
respected far more than a fake answer.
What if I don't know a technical question?
Be honest, share any related knowledge you have, and show you can learn it quickly. Your
attitude often matters as much as the answer.
Can I ask the interviewer to repeat or explain a question?
Yes. Asking for clarification is smart and professional — it shows you want to answer the
right thing.
How do I avoid going blank?
Keep a few ready phrases ("Let me think for a second") so you always have something calm to
say while you gather your thoughts.
Your next step
You now have calm, honest phrases for the moments that scare candidates most — and a way to
turn "I don't know" into a sign of maturity. The real win is saying these phrases out
loud until they're automatic. If you want to practise staying confident under pressure
every day — with a 24/7 AI partner, in just 20 minutes — that's exactly what
FirstWords English's 30-day spoken English bootcamp is
built for.
Next, prepare your strongest answers so you freeze less often:
how to answer "tell me about yourself" and the
50 most common interview questions.