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"destructive" is also used as a crossword clue. If that's what you saw, the answer is often ruinous (7 letters).
Definitions
Causing serious damage or harm.
Word origin
From Middle English destructyve, from Middle French destructif, from Latin dēstrūctīvus, from past participle of dēstruere (“to tear down, destroy”) + -īvus.
Used in a sentence
“The pastures are filled with gay political drop-outs, persons of reasonable intent who found the scene personally destructive.”
“Catabolism is a destructive metabolism that involves the breakdown of molecules and release of energy.”
“Blurring an image is a destructive operation, but rotating an image is not.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Highly damaging”11 letters
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