deadlier
     see deadly
see also:
deadly 

deadly
     adj 1: causing or capable of causing death; "a fatal accident"; "a
            deadly enemy"; "mortal combat"; "a mortal illness"
            syn: deathly, mortal
     2: of an instrument of certain death; "deadly poisons"; "lethal
        weapon"; "a lethal injection" syn: lethal
     3: extremely poisonous or injurious; producing venom; "venomous
        snakes"; "a virulent insect bite" syn: venomous, virulent
     4: involving loss of divine grace or spiritual death; "the
        seven deadly sins" syn: mortala
     5: exceedingly harmful syn: baneful, pernicious, pestilent
     6: of a disease having a rapid course and violent effect
     adv 1: as if dead syn: lifelessly
     2: as if produced by death; "deadly pale"; "a deadly paralytic
        stroke"
     3: used as intensives extremely; "she was madly in love";
        "deadly dull"; "deadly earnest"; "deucedly clever";
        "insanely jealous" syn: madly, insanely, deucedly,
        devilishly
     also: deadliest, deadlier
see also:
deathly mortal lethal venomous virulent mortala 
baneful pernicious pestilent lifelessly madly 
insanely deucedly devilishly deadliest deadlier