hasn'tvshaven'tWhat's the difference?

Which to use

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

#1,999
“hasn't” frequency rank
#808
“haven't” frequency rank
2807
confusion score

Side-by-Side Comparison

Feature hasn't haven't
Definition Has not: negative form of the auxiliary has have not (negative form of have)

Where the eye mixes hasn't and haven't

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

6 ch
hasn't
7 ch
haven't

Spelling & Dictionary Insight

A purely visual mix-up. hasn't (/ˈhæz.n̩t/) and haven't (/ˈhæv.n̩t/) 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 2807, derived from the frequency rank of both members and their visual similarity.

hasn't is recorded at frequency rank #1,999, classified as averb, pronounced /ˈhæz.n̩t/. haven't is at rank #808, tagged as averb, pronounced /ˈhæv.n̩t/.

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 2807, this pair ranks #523,982 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of hasn't vs haven't

Shared letters: ahnt. Private to "hasn't": s. Private to "haven't": ev.

"hasn't" · 5 letters · shape CVCCC  ·  "haven't" · 6 letters · shape CVCVCC

Frequently Asked Questions

Can "hasn't" and "haven't" be used interchangeably?
No. They are said differently (/ˈhæz.n̩t/ versus /ˈhæv.n̩t/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "hasn't" or "haven't"?
"haven't" is the more common of the two: it sits at frequency rank #808 in our English list, against #1,999 for "hasn'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