वृथा [ vṛthā ] [ vṛ́thā ] ind. ( prob. connected with √ 2. [ vṛ ] ) at will , at pleasure , at random , easily , lightly , wantonly , frivolously Lit. RV. Lit. Br. Lit. Gobh. Lit. Mn. Lit. Yājñ. Lit. MBh.

  in vain , vainly , uselessly , fruitlessly , idly Lit. TBr. (with √ [ kṛ ] , " to make useless " , disappoint , frustrate ; with √ [ bhū ] , " to be useless " , be disappointed or frustrated)

  wrongly , falsely , incorrectly , unduly Lit. MBh. Lit. Kāv.