Simple Definition of underarm

from our Learner's Dictionary

underarm

1 of 3

adjective

ˈʌndɚˈɑɚm

always used before a noun : placed on or along the armpit

underarm deodorant

an underarm seam

British : underhand entry 1 sense 1

an underarm throw

underarm

2 of 3

adverb

ˌʌndɚˈɑɚm

British : underhand entry 2

He threw the ball underarm.

underarm

3 of 3

noun

ˈʌndɚˌɑɚm

plural underarms

: armpit

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“Underarm.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/underarm. Accessed 18 Jun. 2026.

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Simple Definition of underarm

underarm

adjective

adverb

noun

Cite this Entry

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