lapsus muris

Spelling & Dictionary Insight

The English entry for lapsus muris is 12 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈlæpsəs ˈmjuːɹɪs/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A “slip of the mouse”; an error occasioned by the use of a computer mouse.".

No misspelling variants are generated for lapsus muris in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Latin lāpsus (“slip; lapse”) + mūris (“of the mouse”), genitive singular of mūs (“mouse”). Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is lapsus muris, spelled L-A-P-S-U-S- -M-U-R-I-S, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.