undernim

From Middle English undernimen, from Old English underniman (“to take in, receive, comprehend, understand, blame, be indignant at, take upon oneself, steal”), equivalent to under- +‎ nim. Cognate with Dutch ondernemen (“to undertake, attempt”), German unternehmen (“to undertake, attempt”).

undernim (third-person singular simple present undernims, present participle undernimming, simple past undernimmed or undernam, past participle undernimmed or undernum or undernome or undernomen)

1. (transitive, obsolete) To seize; catch; grasp.
2. (transitive, obsolete) To perceive; understand.
3. (transitive, obsolete) To blame; reprove; rebuke; reprimand; reprehend.
   • 2004, Anonymous, The Travels of Sir John Mandeville:

     Alas! that it is great slander to our faith and to our law, when folk that be without law shall reprove us and undernim us of our sins, [...]