Artificial intelligent assistant

fuscescent

fuscescent, a. rare—1.
  (fʌˈsɛsənt)
  [f. L. fusc-us (see fuscous) + -escent.]
  Passing into a dark or dusky hue; ‘brownish; approaching to darkish brown in colour’ (Syd. Soc. Lex. 1885).

1881 Johnson in Jrnl. Bot. No. 220. 113 Their colour is fuscescent.

Oxford English Dictionary

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