S1T1R1A1I1T1
6 points
STRAIT is validvalid
narrow [adj STRAITER, STRAITEST] : STRAITLY [adv], STRAITNESS [n] / a narrow waterway connecting two larger bodies of water [n STRAITS]
confined, rigorous [adj STRAITER, STRAITEST, STRAITLY] / to confine [v -ED, -ING, -S]