blither Antonyms

less unthinking less mindless less birdbrained less unwatchful less unobservant less unmindful less unheeding less thoughtless less senseless less regardless less oblivious less negligent less neglectful less relaxed less absent-minded less abstracted less uncaring less slapdash less scatterbrained less precipitate less offhand less irresponsible less indifferent less incautious less imprudent less improvident less frenzied less disregardful less naive less insensitive belt up unhappier still soundless soft-spoken slumbrous slumberous silent noiseless longer dormant bellow clam up keep quiet button it less inconsiderate less inattentive less heedless less forgetful less clueless