underarm
Meaning
located or placed under the arm or in the armpit
the part of the body under the arm; the armpit
Structure
Usage
she applied underarm deodorant after her shower.
the tennis player is known for her powerful underarm serve.
he felt a pain in his left underarm and decided to see a doctor.
Etymology
The word 'underarm' is a transparent compound formed from two Old English elements. 'under' derives from Proto-Germanic under, which has a stable meaning of "beneath," and can be traced back to the proto-indo-European root ndher-, also meaning "under." The element 'arm' comes from Proto-Germanic armaz, originating from the pie root h₂er- meaning "to fit together," which evolved to refer to the jointed limb. The compound logically and literally describes the area located beneath the joint of the upper limb, a meaning that has remained consistent from its formation in English to its modern use in both anatomical and descriptive contexts.
Analysis
'under' is from old english 'under', meaning beneath or below, functioning as a prepositional prefix. 'arm' is from old english 'earm', meaning the upper limb of the body, functioning as the root noun.