quavsquasiWhat's the difference?

Quick tell: qua is a preposition, quasi is an adjective, so they fill different roles in a sentence.

Which to use

“qua” is a preposition and “quasi” is an adjective - they look or sound alike but fill different roles in a sentence.

#35,473
“qua” frequency rank
#15,250
“quasi” frequency rank
50723
confusion score

Side-by-Side Comparison

Feature qua quasi
Definition as; in the capacity of; acting as Resembling or having a likeness to the named thing.

Where the spellings diverge

Shared letters are muted; the letters that actually set qua and quasi apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

3 ch
qua
5 ch
quasi

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: qua is /kwɑː/ while quasi is /ˈkweɪzaɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “qua” sits inside “quasi”, and the parts of speech differ too (preposition vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 50723, derived from the frequency rank of both members and their visual similarity.

qua is recorded at frequency rank #35,473, classified as aprep, pronounced /kwɑː/. quasi is at rank #15,250, tagged as anadj, pronounced /ˈkweɪzaɪ/.

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 50723, this pair ranks #171,757 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of qua vs quasi

Shared letters: aqu. Private to "qua": -. Private to "quasi": is.

"qua" · 3 letters · shape CVV  ·  "quasi" · 5 letters · shape CVVCV

Known mistypes of this pair

  • quasiqausi · qquasi · quais · quassi · qusai · uqasi

Frequency comparison

qua#35,473
quasi#15,250

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "qua" and "quasi" be used interchangeably?
No - they are not even the same part of speech. "qua" is a preposition and "quasi" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "qua" or "quasi"?
"quasi" is the more common of the two: it sits at frequency rank #15,250 in our English list, against #35,473 for "qua". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering qua vs quasi

The fastest way to pick the right one every time.

  • Check the role first: if you need a preposition, it's “qua”; for an adjective, it's “quasi”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “qua” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list