undergird

Verb
  1. Lend moral support to (synset 202562555)
    is a type of: back up, support - give moral or psychological support, aid, or courage to
  2. Make secure underneath (synset 200222144)
    "undergird the ship"
    is a type of: beef up, fortify, strengthen - make strong or stronger
    same as: brace up

Other Searches