To provide a moisture-curable composition which has elasticity, a stain-preventing property, yellowing resistance and transparency, to provide a sealing material, and to provide an adhesive.

This curable composition comprises 100 pts. wt. of a vinylic polymer having cross-linkable silyl groups represented by formula (1): -[Si(R1)2-b(Y)bO]m-Si(R2)3-a(Y)a [R1 and R2 are each a 1 to 20C alkyl, a 6 to 20C aryl, a 7 to 20C aralkyl, or a triorganosiloxy group represented by formula : (R')3Si- (R' is a 1 to 20C monovalent hydrocarbon group, provided that three R' groups may be identical or different); Y is OH or a hydrolyzable group, provided that, when two or more Y groups exit, the Y groups are identical or different; (a) is 0 to 3; (b) is 0 to 2; (m) is an integer of 0 to 19, where (a)+(m)(b)≥1], at the terminals, and 5 to 40 pts.wt. of an air-curable and/or photo-curable compound.