D defs.my
Entry 2 senses Webster, 1913

Overpay

/ōv'-ẽrp-āˌ/ · O·ver·pay · IPA /oʊ.vɚ.peɪ/
01 v. t. To pay too much to; to reward too highly.
imp. & p. p. Overpaid; p. pr. & vb. n. Overpaying
  1. 1.
    To pay too much to; to reward too highly.
  2. 2.
    To pay too much for; as, to overpay the loan balance.