12-letter words containing f, e, b, l
- treble staff — a staff, bearing a treble clef.
- trouble-free — not problematic
- troubleproof — not easily disturbed, disabled, injured, or put out of working order.
- tubuliferous — bearing or made up of tubules.
- unaffordable — that can be afforded; believed to be within one's financial means: attractive new cars at affordable prices.
- unbeneficial — conferring benefit; advantageous; helpful: the beneficial effect of sunshine.
- unconfinable — not able to be bound
- unconfutable — to prove to be false, invalid, or defective; disprove: to confute an argument.
- undefendable — to ward off attack from; guard against assault or injury (usually followed by from or against): The sentry defended the gate against sudden attack.
- undefensible — capable of being defended against assault or injury: The troops were bivouacked in a defensible position.
- unfathomable — not able to be fathomed, or completely understood; incomprehensible: heroism in the face of unfathomable conflict.
- unfavourable — Unfavourable conditions or circumstances cause problems for you and reduce your chances of success.
- unfilterable — not able to be filtered
- unfollowable — to come after in sequence, order of time, etc.: The speech follows the dinner.
- unforgivable — to grant pardon for or remission of (an offense, debt, etc.); absolve.
- unformidable — causing fear, apprehension, or dread: a formidable opponent.
- unmodifiable — incapable of being modified
- unoffendable — to err in conduct; commit a sin, crime, or fault.
- unpreferable — more desirable.
- unprofitable — being without profit; not showing or turning a profit: a series of unprofitable ventures.
- 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.