casual Antonyms

formal self-assertive stalwart staunch steadfast steely stiff stilted strict soi-disant so-called single-minded self-conscious self-seeking self-willed serious set significant simpering simulated stringent striving strong-minded thirsty thrusting ticked unbending uncompromising undaunted unflinching unnatural thespian theatrical studied stunned supereminent sustained teleological tenacious thaw theatric unremitting self-asserting peculiarity posed posturing potential predestined premeditated prepense