uhhvsumWhat's the difference?

Which to use

“uhh” and “um” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#16,153
“uhh” frequency rank
#5,846
“um” frequency rank
21999
confusion score

Side-by-Side Comparison

Feature uhh um
Definition Alternative form of uh. Expression of hesitation, uncertainty or space filler in conversation.

Where the eye mixes uhh and um

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
uhh
2 ch
um

Spelling & Dictionary Insight

A purely visual mix-up. uhh ([əː]) and um (/ʌm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 21999, derived from the frequency rank of both members and their visual similarity.

uhh is recorded at frequency rank #16,153, classified as anintj, pronounced [əː]. um is at rank #5,846, tagged as anintj, pronounced /ʌm/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 21999, this pair ranks #419,811 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of uhh vs um

Shared letters: u. Private to "uhh": h. Private to "um": m.

"uhh" · 3 letters · shape VCC  ·  "um" · 2 letters · shape VC

Frequently Asked Questions

Can "uhh" and "um" be used interchangeably?
No. They are said differently ([əː] versus /ʌm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "uhh" or "um"?
"um" is the more common of the two: it sits at frequency rank #5,846 in our English list, against #16,153 for "uhh". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list