Deadly

Synonyms: Fatal, mortal, life-threatening, destructive, harmful, detrimental, unhealthy, toxic, terminal, untreatable, deathly, mephitic, lethal, death-dealing, dangerous, injurious, pernicious, deleterious, noxious, poisonous, incurable, malignant, nocuous, and baneful.

Synonyms: Mortal, implacable, relentless, unappeasable, merciless, bitter, antagonistic, fierce, savage, irreconcilable, remorseless, unrelenting, unforgiving, pitiless, hostile, murderous, grim, and at each other's throats.

Synonyms: Unerring, impeccable, flawless, assured, true, accurate, exact, on target, inch-perfect, bang on, unfailing, perfect, faultless, sure, precise, correct, direct, on the mark, and spot on.

Synonyms: Completely, totally, perfectly, wholly, beyond, dead, in every way, in all respects, every inch, to the core, great, extreme, immoderate, absolutely, utterly, entirely, fully, quite, thoroughly, in every respect, one hundred per cent, to the hilt, intense, marked, excessive, and inordinate.

Synonyms: Boring, dull as ditchwater, uninteresting, uneventful, unstimulating, lacklustre, dry as dust, flat, monotonous, lacking variety, tedious, tiring, irksome, frustrating, soul-destroying, not up to much, samey, ornery, dull, dreary, unexciting, uninspiring, humdrum, dry, arid, bland, unrelieved, lacking variation, tiresome, wearisome, trying, mind-numbing, no great shakes, nothing to write home about, and dullsville.

Synonyms: Deathly, ashen, white, wan, ghastly, deathlike, ghostly, pallid, and pale.