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Definition of mouser
mouser
/ˈmaʊzər/
mous · er
Plural:mousers
mouser Lexical Profile
CEFR
C1
Grade
7
Tier
2
Usage
Rare
Syllables
2
mouser Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
An animal, especially a domestic cat, that hunts or catches mice.
Example
"The farmer adopted a stray tabby that quickly proved to be an excellent mouser in the grain barn."
Synonyms
View all synonyms for mouser• Rhymes for mouser
Word Origin & Etymology
Formed in late Middle English from the verb 'mouse' (to hunt for mice) and the agentive suffix '-er'.
Cite this Entry
Wordmom. (2026). Definition of Mouser. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/mouser