suckling

n (idm 习语) out of the mouths of babes and sucklings => mouth1.

succor, succour, succour (US succor), succubus, succulence, succulent, succumb, such, such a(an) that, such as, such being the case, such-and-such, such...that, such...that..., suchlike, suck, suck up, sucker, sucking-pig, suckle, sucrose, suction, sudden, suddenly, suddenness, suds, sudsy, sue, suede, suet, suety, suffer, suffer from, sufferance, sufferer, suffering, suffice, sufficiency, sufficient, sufficiently,