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Adjective: crumbly (crumblier,crumbliest)  krúm-b(u-)lee
  1. Easily broken into small fragments or reduced to powder
    "crumbly cookies";
    - friable
Noun: crumbly  krúm-b(u-)lee
Usage: offensive (=old person)
  1. An elderly person
    - oldster [N. Amer, informal], old person, senior citizen, golden ager [N. Amer, informal]

Derived forms: crumblies, crumbliest, crumblier

See also: breakable

Type of: adult, grownup