underestimating underestimation underevaluation underexpose underexposed underexposes underexposing underexposure underexposures underfed
| underfeed underfeeding underfeeds underfelt underfinanced underflow (current term) underflows underfoot underframe underfund
| underfunded underfunding underfunds underfur underfurrow underfurs undergarment undergarments undergird undergirded
|