Seize-upon Definition

verb

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

The child seized upon the cat's tail as soon as it was within reach.

Wiktionary

To take up, embrace, enact, or turn eagerly to (a plan, idea, ideology, cause, practice, method, etc.); to grasp, understand, and accept quickly; to adopt wholeheartedly or vigorously.

I heard her ideas and seized upon them immediately.

The committee seized upon the new plan at once.

Wiktionary

To take possession of or claim (an idea, person, event, etc.) as one's own; to assimilate, absorb, annex, co-opt.

After the controversy of her public statement, she has been the darling of right-wing groups who have seized upon her as the poster child of their cause.

Wiktionary