understood

vbl. understand的过去式和过去分词

underrate, underscore, undersea, underseal, undersell, undershirt, undershorts, underside, undersigned, undersized, underslung, undersold, understaffed, understand, understandable, understandably, understanding, understate, understated, understatement, understudy, undertake, undertaker, undertaking, undertone, undertow, underutilize, undervalue, underwater, underwear, underweight, underwent, underworld, underwrite, underwriter, undeserved, undeservedly, undeserving, undesignated, undesirable,