adjective. Completely such; thoroughgoing.

Wandering; itinerant; vagrant; errant: as, a knight arrant; an arrant preacher: especially in thief arrant or arrant thief, a roving, outlawed robber; a highwayman. Now written errant.

Notorious; manifest; unmitigated; downright: in a bad sense (derived from the noun qualified): as, an arrant rogue; an arrant coward; arrant nonsense.

Thorough; downright; genuine: in a good sense.

Synonyms Utter, rank, consummate, perfect.

adjective. Notoriously or preëminently bad; thorough or downright, in a bad sense; shameless; unmitigated.

adjective. Thorough or downright, in a good sense.

adjective. Utter; complete.

adjective. Alternative spelling of errant.

adjective. without qualification; used informally as (often pejorative) intensifiers

"Event 2: We say homosexuality is a variant sexuality which does no intrinsic harm to the consenting adults that practice it or anyone else outwith their relationship, rejecting in no uncertain terms your arrant presumption that you have the privilege to impose your morés on us -- or anyone else, for that matter -- and criticising your judgementalism as ethically retarded."

unmitigated  

abominable  barefaced  black-hearted  blatant  canting  

abject  abominable  absolute  atrocious  awful