Die woordeboekdefinisie van "onsinnig" is "op 'n wyse wat sin, betekenis of idees ontbreek; dwaas of sinneloos". Dit is 'n bywoord wat aksies of spraak beskryf wat sinneloos, dom is of gebrekkig is aan intelligensie.
When she placed a flirtatious hand on his arm and asked him huskily if he would like to share a taxi with her, he had jerked to his feet in sudden panic and apologised inanely.