Deadly — synonyms, definition

1. deadly (a)

baleful baneful bloodthirsty cancerous capital contagious dangerous deathly deleterious destructive detrimental evil fatal fateful final harmful heinous hurtful implacable injurious • • •

2. deadly (Adjective)

boring deadening draggy dull ho-hum irksome mind-numbing slow unamusing wearisome

deadly (Adjective) — Causing or capable of causing death. ex. "a deadly enemy"

deadly (Adjective) — Of an instrument of certain death. ex. "deadly poisons"

deadly (Adjective) — Extremely poisonous or injurious; producing venom. ex. "deadly snakes"

deadly (Adjective) — (theology) involving loss of divine grace or spiritual death. ex. "the seven deadly sins"

deadly (Adjective) — Exceedingly harmful.

deadly (Adjective) — (of a disease) having a rapid course and violent effect.

deadly (Adjective) — So lacking in interest as to cause mental weariness.

3. deadly (Adverb)

deucedly devilishly insanely lifelessly madly

deadly (Adverb) — As if dead.

deadly (Adverb) — (used to intensify) extremely. ex. "deadly dull" ex. "deadly earnest"