bony

Someone who's bony is very thin. Your cat may have been plump when he was young, and become bony as he got older.

If you're so skinny that your bones are prominent, your friends might call you bony and encourage you to eat more. Another way to use the adjective bony is to mean "like bone" or "containing bone." Some animals have bony shells or protective plates — and you might not enjoy your fish dinner if it's way too bony. Bony shares a root with bone, the Old English ban, "bone or tusk."

Definitions of bony
  1. adjective
    composed of or containing bone
    synonyms: osseous, osteal
  2. adjective
    having bones especially many or prominent bones
    “a bony shad fillet”
    “her bony wrist”
    bony fish”
    synonyms: boney
    bone
    consisting of or made up of bone
    boned
    having bones as specified
    bonelike
    resembling bone
    strong-boned
    having strong bones
    see moresee less
    Antonyms:
    boneless
    being without a bone or bones
    boned, deboned
    having had the bones removed
    show more antonyms...
  3. adjective
    very thin especially from disease or hunger or cold
    “emaciated bony hands”
    synonyms: cadaverous, emaciated, gaunt, haggard, pinched, skeletal, wasted
    lean, thin
    lacking excess flesh
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