defect

Synonyms: birthmark blot blotch break bug catch check crack deficiency deformity discoloration drawback error failing fault flaw foible frailty gap glitch gremlin hole infirmity injury irregularity kink knot lack mark marring mistake patch rift rough spot scar scarcity scratch seam second shortage shortcoming sin speck spot stain taint unsoundness vice want weakness weak point

Antonyms: advantage improvement perfection strength

Synonyms: abandon abscond apostatize back out break faith change sides depart desert fall away from forsake go go back on go over go over the fence lapse leave pull out quit rat rebel reject renege renounce revolt run out schism sell out spurn take a walk tergiversate tergiverse turn turn coat walk out on withdraw

Antonyms: come in join