un·der·arm
ˌən-dər-ˈärm 
un·der·arm
ˈən-dər-ˌärm
1
2
: the part of a garment that covers the underside of the arm
Examples of underarm in a Sentence
Adverb
He threw the ball underarm.
Recent Examples on the Web
Mark Davis, Newsweek, 16 Mar. 2025
The underarm area is high enough to prevent side boob or spillage.
—Malia Griggs, Glamour, 5 Mar. 2025
Charlie Eccleshare, The Athletic, 24 Mar. 2025
This long-lasting cream deodorant is aluminum-free, and contains a blend of shea butter, calendula oil, apricot kernel oil and vitamin E to help soothe the underarms and has a proprietary complex that works to absorb moisture and neutralize smells.
—Alanna Martine Kilkeary, Glamour, 25 Feb. 2025
See All Example Sentences for underarm
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Adjective
Harvard Health explains excessive sweating from hot flashes and night sweats can promote underarm bacteria growth, leading to stronger body odor.
—Mark Davis, Newsweek, 16 Mar. 2025
The underarm area is high enough to prevent side boob or spillage.
—Malia Griggs, Glamour, 5 Mar. 2025
Noun
There are fewer underarm serves on the WTA Tour than on the ATP Tour because most women’s players do not tend to stand as far back on return as some of the men.
—Charlie Eccleshare, The Athletic, 24 Mar. 2025
This long-lasting cream deodorant is aluminum-free, and contains a blend of shea butter, calendula oil, apricot kernel oil and vitamin E to help soothe the underarms and has a proprietary complex that works to absorb moisture and neutralize smells.
—Alanna Martine Kilkeary, Glamour, 25 Feb. 2025
See All Example Sentences for underarm
Cite this Entry
“Underarm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underarm. Accessed 3 May. 2025.
Copy CitationKids Definition
underarm
1 of 3 adjective
un·der·arm
ˌən-də-ˌrärm
1
: underhand entry 2 sense 2
an underarm toss
2
: placed under or on the underside of the arm
underarm seams
underarm
2 of 3 adverb
un·der·arm
ˌən-də-ˈrärm
: with an underarm motion
underarm
3 of 3 noun
un·der·arm
ˈən-də-ˌrärm
1
: armpit
2
: the part of a garment that covers the underside of the arm
Medical Definition
underarm
noun
un·der·arm
ˈən-dər-ˌärm
: armpit
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