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Definition of muscleless
muscleless
/ˈmʌs.əl.ləs/
mus · cle · less
muscleless Lexical Profile
CEFR
C1
Grade
8
Tier
3
Usage
Rare
muscleless Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Lacking muscular strength, development, or definition; physically weak or flabby.
Example
"After months of complete bed rest, his previously athletic arms appeared almost entirely muscleless."
2
Anatomically devoid of any muscle tissue.
Example
"Certain microscopic organisms have completely muscleless body structures and rely entirely on cilia for movement through the water."
Synonyms
View all synonyms for muscleless Antonyms
View all antonyms for muscleless• Nearby Words
Word Origin & Etymology
Formed by adding the Old English suffix '-less' (meaning 'without') to the noun 'muscle', which derives from the Latin 'musculus' (literally 'little mouse', referring to the appearance of certain muscles under the skin).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Muscleless. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/muscleless