suckly

As adjectives the difference between suckly and sickly

is that suckly is {{cx|rare|nonstandard|lang=en}} Tending to, apt to, prone to, or desirous to suck while sickly is frequently ill; often in poor health; given to becoming ill.

As a verb sickly is

to make sickly.

As an adverb sickly is

in a sick manner.

As a noun suckle

is (obsolete) a teat.

As a verb suckle

is to give suck to; to nurse at the breast.

As an adjective suckly is

tending to, apt to, prone to, or desirous to suck.

As adjectives the difference between duckly and suckly

is that duckly is of, pertaining to, or characteristic of a duck or ducks while suckly is {{cx|rare|nonstandard|lang=en}} Tending to, apt to, prone to, or desirous to suck.

As adjectives the difference between sucky and suckly

is that sucky is (slang) being something which sucks, which is unpleasant or lacks value while suckly is tending to, apt to, prone to, or desirous to suck.

As a noun sucky

is a pacifier.