12-letter words containing b, e, f, l, a
- unreformable — not able to be reformed or reclaimed
- unrefundable — to give back or restore (especially money); repay.
- unsufferable — insufferable; intolerable
- unverifiable — to prove the truth of, as by evidence or testimony; confirm; substantiate: Events verified his prediction.
- whiffle ball — any of various lightweight, hollow plastic balls with several large air holes that cause them to abruptly curve or sink when thrown, hit, etc.