Dictionary.com

underarm

[ uhn-der-ahrm ]
/ ˈʌn dərˌɑrm /

adjective

of, situated, or for use under the arm or in the armpit: an underarm deodorant.
underhand: an underarm pitch in softball.

noun

armpit.

adverb

underhand.

QUIZZES

CAN YOU GUESS THESE WORDS FROM AROUND THE US?

American English is not always as it appears to be ... get to know regional words in this quiz!
Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?
Often it means something is impossible.
It’s another way to agree with someone.
It serves as an apology.
TAKE THE QUIZ TO FIND OUT

Origin of underarm

First recorded in 1810–20; under- + arm1

Words nearby underarm

under a cloud, underact, underactive, underage, under any circumstances, underarm, underarmed, under arrest, underbearer, underbelly, underbid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for underarm

British Dictionary definitions for underarm

underarm
/ (ˈʌndərˌɑːm) /

adjective

(of a measurement) extending along the arm from wrist to armpit
sport of or denoting a style of throwing, bowling, or serving in which the hand is swung below shoulder level
below the arm

adverb

in an underarm style
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for underarm

underarm
[ ŭn′dər-ärm′ ]

adj.

Located, placed, or used under the arm.

n.

The armpit.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.