Crossword Dictionary

vehement

vehement - a 
characterized by great force or energy; "vehement deluges of rain"; "vehement clapping"; "a vehement defense" 

wordplays

synonyms

aggressive, assertive, dynamic, emphatic, energetic, forceful, full-blooded, muscular, resounding, strenuous, vigorous, violent

in a sentence

He issued a vehement denial of the accusation.  

The proposal has faced vehement opposition from many teachers.  

She was vehement about the need for new safety measures.

merriam-webster

etymology

early 15c., from Old French vehement, veement "impetuous, ardent" (12c.), from Latin vehementem (nominative vehemens) "impetuous, eager, violent, furious, ardent, carried away," perhaps [Barnhart] from a lost present middle participle of vehere "to carry" (from PIE root *wegh- "to go, move, transport in a vehicle"). The other theory is that it represents vehe-"lacking, wanting" + mens "mind." Related: Vehemently.

etymonline