unnoticeable adj 1: not obtrusive or undesirably noticeable; "a quiet, unobtrusive life of self-denial" [syn: {unobtrusive}, {unnoticeable}] [ant: {noticeable}, {obtrusive}] 2: not noticeable; not drawing attention; "her clothes were simple and unnoticeable"- J.G.Cozzens [ant: {noticeable}] 3: not drawing attention; "an unnoticeable cigarette burn on the carpet"; "an obscure flaw" [syn: {obscure}, {unnoticeable}]