didn'tvsdon'tWhat's the difference?

Which to use

“didn't” and “don't” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#195
“didn't” frequency rank
#68
“don't” frequency rank
263
confusion score

Side-by-Side Comparison

Feature didn't don't
Definition did not (negative auxiliary) do not (negative auxiliary).

Where the eye mixes didn't and don't

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
didn't
5 ch
don't

Spelling & Dictionary Insight

A purely visual mix-up. didn't (/ˈdɪdn̩t/) and don't (/dəʊnt/) 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 263, derived from the frequency rank of both members and their visual similarity.

didn't is recorded at frequency rank #195, classified as averb, pronounced /ˈdɪdn̩t/. don't is at rank #68, tagged as averb, pronounced /dəʊnt/.

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 263, this pair ranks #529,660 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of didn't vs don't

Shared letters: dnt. Private to "didn't": i. Private to "don't": o.

"didn't" · 5 letters · shape CVCCC  ·  "don't" · 4 letters · shape CVCC

Frequently Asked Questions

Can "didn't" and "don't" be used interchangeably?
No. They are said differently (/ˈdɪdn̩t/ versus /dəʊnt/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "didn't" or "don't"?
"don't" is the more common of the two: it sits at frequency rank #68 in our English list, against #195 for "didn't". 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