overarm vs overhanded

overarm and overhanded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
overarm	No	Yes	No	No
overhanded	No	Yes	No	No

As adjectives, overarm and overhanded are synonyms defined as:

overarm and overhanded: with hand brought forward and down from above shoulder level

Other synonyms of overarm include overhand.

overarm (adjective)	overhanded (adjective)
with hand brought forward and down from above shoulder level	with hand brought forward and down from above shoulder level