pat

• n.
  • the sound made by a gentle blow

    同义词： rap tap

  • a light touch or stroke

    同义词： tap dab

• v.
  • pat or squeeze fondly or playfully, especially under the chin

    同义词： chuck

  • hit lightly

    "pat him on the shoulder"

    同义词： dab

• adj.
  • having only superficial plausibility

    同义词： glib slick

  • exactly suited to the occasion

    "a pat reply"

• adv. completely or perfectly

  "he has the lesson pat"; "had the system down pat"

以上来源于: WordNet