Yes — "laugh" is a well-known irregular sight word. The "gh" is pronounced like an "f" sound, which almost never happens elsewhere in English, so the word must be memorized.
The joke made everyone laugh out loud.
In most words, "gh" is either silent (as in "night" or "though") or simply not present at all. "Laugh" is one of a small handful of English words where "gh" makes an "f" sound instead — a pattern shared with "cough", "tough", and "enough". Because this rule is so rare, children learn "laugh" as a whole memorized word.
Group "laugh" with "enough" and "cough" when practicing, so your child sees the "gh-as-f" pattern as a small family of exceptions rather than one isolated oddity.
Word Wizard teaches "laugh" with Flash Cards, Listen & Pick, Spell It, and Write It — four game modes that turn repetition into play.
See "laugh" with its picture, syllables, and example sentence — with native audio.
Hear "laugh" spoken aloud and pick it out from similar-looking words.
Build "laugh" letter by letter from shuffled tiles.
Word Wizard turns sight word practice into a game — Flash Cards, Listen & Pick, Spell It and Write It, from Pre-K through Grade 5.