29 possible answers to
Answers with 3 characters: BIN PEN Answers with 4 characters: CAGE HOLD PNUP SHUT Answers with 5 characters: BOXIN CRAMP HEMIN LIMIT PENIN PENUP STINT Answers with 6 characters: DETAIN ENCAGE IMMURE INTERN COOPUP KEEPIN MURE-2 SHUTIN TETHER Answers with 7 characters: ENCLOSE IMPOUND ISOLATE FENCEIN TIEDOWN Answers with 8 characters: RESTRICT STRAITEN