quick has a /w/, conquer doesn't — What's the Real Rule for QU?

Most learners treat QU as one fixed sound — the "kw" in quick, queen, question. Then conquer shows up, then lacquer, then mosquito, and that /w/ sound has simply vanished. Same two letters, different outcome, and the spelling gives no warning about which one you're looking at.

The good news: this isn't random, the pattern is simple, and the exceptions are few enough to just learn once.

Default rule: QU = /kw/, covering the vast majority of words

This is the sound most QU's actually make, whether QU sits at the start of a word or in the middle.

• quick /kwɪk/, queen /kwiːn/, quiet /ˈkwaɪət/, quality /ˈkwɒləti/
• square /skweər/, quarter /ˈkwɔːrtər/, request /rɪˈkwest/, equal /ˈiːkwəl/

Notice that last group: QU doesn't have to be word-initial. In the middle of a word (square, request, equal), the rule works exactly the same way. This is your default — assume /kw/ for any unfamiliar word, and you'll usually be right.

Exception 1: /k/ — no /w/ at all, mostly in words borrowed from French

A small set of words drop the lip-rounded glide entirely, leaving a plain /k/.

• lacquer /ˈlækər/, liquor /ˈlɪkər/, mosquito /məˈskiːtoʊ/, racquet /ˈrækɪt/, torque /tɔːrk/

A pair worth memorizing: conquer /ˈkɒŋkər/ vs. conquest /ˈkɒŋkwest/

Same root, same meaning family ("to conquer"), but the verb drops the /w/ while the noun keeps it. Spelling barely differs; pronunciation doesn't match at all — which is exactly why QU can't be guessed from spelling alone. You either learn this small set of words, or you check the IPA.

Exception 2: two words that just have to be memorized on their own — queue and quay

These two break every rule above, so they don't belong in a pattern — they're isolated vocabulary.

• queue /kjuː/ — the whole word is pronounced like the name of the letter Q; the rest of the letters (u-e-u-e) contribute nothing
• quay /kiː/ — not only is there no /w/, the vowel that follows /k/ turns into a long /iː/, making it a homophone of "key"

Both are common enough — queue shows up constantly in British English, quay shows up in travel writing and place names — that mispronouncing either one tends to stand out.

How to actually use this

Default to /kw/ for any QU you meet. If the word is one of the handful of high-frequency exceptions — lacquer, liquor, mosquito, racquet, torque, conquer — switch to /k/. If it's queue or quay, treat them as two standalone words to memorize, not cases of a rule.

Not sure whether a QU in front of you carries the /w/ or not? PHONO reads any English text through your camera and marks every word with IPA, so spelling traps like this one stop being guesswork.

Download: https://apps.apple.com/us/app/phono-english-phonetics-ipa/id6783243417 · phono.douhouse.com