14-letter words containing a, b, r, m, s
- undemonstrable — not able to be made evident
- universal beam — a broad-flanged rolled steel joist suitable for a stanchion (axial load) or beam (bending load)
- unsurmountable — to mount upon; get on the top of; mount upon and cross over: to surmount a hill.
- untransmutable — intransmutable