siblinged

As a noun terms

is .

As an adjective siblinged is

(rare) having a sibling or siblings.

Only is an antonym of siblinged.

In rare|lang=en terms the difference between only and siblinged

is that only is (rare) only child while siblinged is (rare) having a sibling or siblings.

As adjectives the difference between only and siblinged

is that only is alone in a category while siblinged is (rare) having a sibling or siblings.

As an adverb only

is without others or anything further; exclusively.

As a conjunction only

is under the condition that; but.

As a noun only

is (rare) only child.

As a noun sibling

is a person who shares same parents one's brother or sister.

As an adjective siblinged is

(rare) having a sibling or siblings.