pissant

or piss-ant

[ pis-ant ]
/ ˈpɪsˌænt /

noun

Slang: Vulgar. a person or thing of no value or consequence; a despicable person or thing.
Obsolete. an ant.

adjective

Slang: Vulgar. insignificant or worthless.

Origin of pissant

1655–65, in sense “ant”; piss + ant, probably orig. on the model of pismire
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pissant

pissant

/ (ˈpɪsænt) US informal /

noun

an insignificant or contemptible person

adjective

insignificant or contemptible

Word Origin for pissant

C17: from piss + ant
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