unefficacious

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Not efficacious.

词形变化

more unefficacious comparative most unefficacious superlative

词源

Etymology tree
Proto-Indo-European *né
Proto-Indo-European *n̥-
Proto-Germanic *un-
Proto-West Germanic *un-
Old English un-
Middle English un-
English un-
English efficacious
English unefficacious
From un- + efficacious.
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