Of things, chiefly material things: Mild, soft; also, agreeable, mellow, pleasant. Of a medicine: Gentle in operation. Obsolete exc. dialect.

Of a medicine (esp. a laxative): not violent or powerful in action; lacking unpleasant effects or side effects. Cf. mild, adj. 7a.

Medicine. Of medicines: Gentle or mild in operation. Of food: Easily digested. Obsolete.

Of a medicine, cleaning agent, etc.: not powerful or violent in effect; not causing severe side effects; not harsh or irritant. †Of a…

Not irritating (to the body or tissues); = non-irritant, adj. Cf. unirritating, adj.

Of medicines: Mild, unirritating. Of food: Not stimulating. (Cf. quot. 1667 at sense 2a).

Of a recreational drug: not regarded as extremely harmful; not likely to cause addiction.