Unfazed vs Unphased: Which One Is Correct?

If you want to say someone was not bothered by something, the word you want is unfazed. Many people write “unphased” because it sounds the same and looks like a real word. In the “not bothered” sense, it is a mistake.

The short answer

• Unfazed is the standard spelling. It means not disturbed, worried, or shaken by something.
• Unphased is not the standard spelling for that meaning. Dictionaries list “unfazed,” and careful editors will correct “unphased.”

Both words are pronounced the same way: un-FAYZD.

What “unfazed” means

“Unfazed” comes from the verb faze, which means to bother, upset, or disturb someone. To be unfazed is to stay calm when something could have rattled you.

• The teacher was unfazed by the loud noise in the hallway.
• She stayed unfazed even when the interviewer asked a tough question.
• Nothing seems to faze him, not even a last-minute change of plans.
• The team was unfazed by the late start.

“Faze” is most often used in negative sentences or questions, such as “It didn’t faze me” or “Does anything faze you?” That is why “unfazed” is so common.

Why people write “unphased”

The confusion is easy to understand. There is a common word spelled phase, which means a stage in a process, as in “the first phase of the project.” Its past form, “phased,” sounds exactly like “fazed.” Because the two words sound identical, many writers pick the spelling that looks more familiar.

Spell-checkers sometimes miss the error too, because “unphased” can pass as a real word. The two words have different meanings, though, and they come from different roots.

Is “unphased” ever correct?

Rarely, and only with a different meaning. “Phase” is also a verb meaning to do something in stages. Something “unphased” in that sense is not carried out in stages.

• The company chose an unphased rollout, so every store changed on the same day.

In technical writing, “phased” can also describe things like phased arrays or phased plans. This is a different idea from being bothered. Outside of these uses, “unphased” for “not bothered” is not standard.

Quick comparison

	Unfazed	Unphased
Meaning	Not bothered or disturbed	Not done in stages (rare)
Root word	Faze (to bother)	Phase (a stage)
Use for a calm reaction?	Yes	No
Sounds like	un-FAYZD	un-FAYZD

A simple test

Replace the word with “not bothered.”

• “She was unfazed by the criticism.” → “She was not bothered by the criticism.” This works, so use unfazed.
• “The plan was unphased.” → “The plan was not done in stages.” This also works, but only if you truly mean stages.

If you are describing how a person feels or reacts, “unfazed” is the right choice almost every time.

Related forms to watch

The same mix-up happens with the other forms of the verb:

• Fazed (bothered): “The news didn’t seem to faze her.” Do not write “phased” here.
• Phased (done in stages): “The road work will be phased over three months.”
• Phased out (removed gradually): “The old model was phased out last year.”

If the sentence is about a reaction, use “faze.” If it is about stages or steps, use “phase.”

Common mistakes

• Wrong: He was completely unphased by the delay.
  Right: He was completely unfazed by the delay.
• Wrong: The crowd didn’t phase her.
  Right: The crowd didn’t faze her.

Takeaway

When you mean “not bothered or shaken,” write unfazed. Save “phase” and “phased” for talk about stages and steps. The two words sound alike, but only one of them describes a calm reaction.

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• Losses vs Loses: What’s the Difference and Which One to Use