Online Google Dictionary

groundless 中文解釋 wordnet sense Collocation Usage Collins Definition
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Not based on any good reason,
  1. Not based on any good reason
    • - your fears are quite groundless

  1. baseless: without a basis in reason or fact; "baseless gossip"; "the allegations proved groundless"; "idle fears"; "unfounded suspicions"; "unwarranted jealousy"
  2. (groundlessness) the quality of lacking substance or value; "the groundlessness of their report was quickly recognized"