Signifying something; carrying meaning. / Having a covert or hidden meaning. / Having a noticeable or major effect. / Reasonably large in number or amount.

That which has significance; a sign; a token; a symbol.

plural of significant

The quality of being significant.

The extent to which something matters; importance / Meaning.

plural of significance

(dated) significance

plural of significancy

One's romantic partner, regardless of marital status or gender. / A person with whom one has an important bond of some kind.

(mathematics) Synonym of significant figure