English edit

Etymology edit

From Middle English forthwaxen, from Old English forþweaxan (to break forth, burst forth), equivalent to forth- +‎ wax (to grow, increase).

Verb edit

forthwax (third-person singular simple present forthwaxes, present participle forthwaxing, simple past and past participle forthwaxed)

  1. (intransitive, obsolete) To grow forth; grow to excess; increase; come on.