undersend verb 2noun 1forms 3 verb2 •To send less than required, needed, or requested.[…] for you to oversend something, couldn't it have been just as easy to undersend something? — 2011 •To send beneath, under, or through; submit.Is sorry Sir Bassingbourne should have so much trouble in getting his glass. Undersends the charge. — 1895 noun1 •That which is undersent or submitted.We are also able to evaluate oversends and undersends and trends in our system. — 2012 formsundersent · undersending · undersends