12-letter words containing t, r, o, u, b, l
- unobligatory — required as a matter of obligation; mandatory: A reply is desirable but not obligatory.
- unprofitable — being without profit; not showing or turning a profit: a series of unprofitable ventures.
- unreportable — not able to be reported, relayed, or spoken of
- unrestorable — to bring back into existence, use, or the like; reestablish: to restore order.
- untroubledly — in an untroubled manner
- urbanologist — a sociologist specializing in urban life and problems