Use faze (verb) to mean to disturb, disconcert, or worry someone — nothing seems to faze her. Use phase (noun/verb) for a stage in a process, or to introduce/remove gradually — the next phase of the project.
The Core Difference
“Faze” is a verb, almost always used in negative sentences, meaning to disturb, unsettle, or intimidate someone: the criticism didn’t faze him, nothing fazes her.
“Phase” is most commonly a noun meaning a distinct stage or period in a process of change or development: the planning phase, a difficult phase. As a verb, it means to introduce or remove something gradually: phase out old equipment.
- disturb, worry (verb) → faze: the noise didn’t faze the baby
- stage in a process (noun) → phase: we are in the testing phase
Faze and Phase in Context
Public speaking never seems to faze her.
The project is now entering its final phase.
Nothing about the difficult exam fazed him.
The company plans to phase out plastic packaging by 2027.
Tough questions from the audience did not faze the speaker.
Common Mistakes
| Incorrect | Correct | Why |
|---|---|---|
| ✗ the delay didn’t phase him at all | ✓ the delay didn’t faze him at all | disturb, unsettle |
| ✗ we are in the testing faze | ✓ we are in the testing phase | stage of a process |
| ✗ nothing phases her | ✓ nothing fazes her | disturb, unsettle |
| ✗ phase in the new plan gradually is correct, but "faze in" | ✓ phase in the new plan gradually | introduce gradually |
| ✗ a difficult faze of life | ✓ a difficult phase of life | stage/period |
PHASE looks like “PHASE of the moon” — a recognisable stage that changes over time. FAZE has a “Z”, like being ZAPPED or shaken — something that disturbs or unsettles you.
Related Questions
- Faze vs Phase — full confusing-words comparison page with additional examples and exercises.
- All Confusing Words — browse all 300+ word-pair guides.
- All Questions — more quick-answer pages.
- Grammar Quiz — test your knowledge of confusing word pairs.
Frequently Asked Questions
What is the clearest way to remember faze vs phase?
Connect “phase” to the “phases of the moon”, a well-known idea of distinct stages. Connect “faze”, with its Z, to being “zapped” or shaken — something that disturbs you.
Is "faze" almost always used in negative sentences?
Yes, it is overwhelmingly used with “not” or “nothing”: “It didn’t faze me”, “nothing fazes him”. Positive uses (“that really fazed me”) exist but are less common.
What does "phase in" mean?
“Phase in” means to introduce something gradually over time, rather than all at once: “The new regulations will be phased in over two years.”
What does "phase out" mean?
“Phase out” means to gradually remove or stop using something over time: “The old machines will be phased out by next year.” It is the opposite of “phase in”.
Is "faze" a formal or informal word?
It is fairly informal and conversational, most common in spoken English and casual writing, whereas “phase” is neutral and used in both formal and informal contexts.
Are faze and phase pronounced the same?
Yes, they are homophones, pronounced identically, which is precisely why the spelling mix-up between them is so common.
Can "phase" describe an emotional period, like in teenagers?
Yes — “a phase” is commonly used to describe a temporary period of particular behaviour, especially in children or teenagers: “It’s just a phase; she’ll grow out of it.”
Is there a noun form of "faze"?
No common noun form exists; “faze” functions only as a verb in standard English.
Why do writers often choose "phase" by mistake when they mean "faze"?
Because “phase” is a much more frequent, familiar word (used constantly in project and business contexts), so when writers need the rarer homophone “faze”, the more common spelling often comes to mind first.
Which word fits: "The heckling in the crowd didn’t seem to ___ the comedian at all"?
“Faze” — because the sentence describes whether something disturbed or unsettled the comedian, not a stage in a process.