To grasp or take hold of (an object) suddenly, forcibly, or tightly.

(archaic) To be incumbent upon; to be up to (someone); to be obligatory upon. / To lie on. / (obsolete) To importune; to urge; to solicit.

(obsolete) in a moment

Third-person singular simple present indicative form of build upon

Synonym of build on

(transitive, idiomatic) To find (someone or something) by chance.

Synonym of count on

Third-person singular simple present indicative form of seize upon

simple past tense and past participle of seize upon

present participle of seize upon