devastating

(verb) cause extensive destruction or ruin utterly. Synonyms: lay waste to, waste, devastate, desolate, ravage, scourge. Example: "The enemy lay waste to the countryside after the invasion."

(verb) overwhelm or overpower. Synonyms: devastate. Example: "He was devastated by his grief when his son died."

(adj) making light of. Synonyms: annihilating, withering. Examples: "Afire with annihilating invective." "A devastating portrait of human folly." "To compliments inflated i've a withering reply"- w.s.gilbert."

(adj) wreaking or capable of wreaking complete destruction. Synonyms: annihilative, annihilating, withering. Examples: "Possessing annihilative power." "A devastating hurricane." "The guns opened a withering fire."

(adj) physically or spiritually devastating; often used in combination. Synonyms: crushing. Examples: "A crushing blow." "A crushing rejection." "Bone-crushing."