मृषा [ mṛṣā ] [ mṛ́ṣā ] ind. in vain , uselessly , to no purpose Lit. RV.

  wrongly , falsely , feignedly , lyingly Lit. AV. (with √ [ kṛ ] , to feign ; with √ [ jñā ] or [ man ] , to consider false or untrue ; [ mṛṣaiva ] [ tat ] , that is wrong ; [ varanīyam mṛṣā budhaiḥ ] , untruthfulness is to be avoided by the wise)

  " Untruth " personified as the wife of A-dharma Lit. BhP.