ときめく

Etymology 1
Compound of. The derivation of the toki element is unclear. It might be cognate with the doki element in adverb in reference to one's heart.

Verb

 * 1) to be restless with emotion, to throb with anxiety

Etymology 2
Compound of. Compare.

Verb

 * 1)  to prosper, to thrive, to be in full bloom; to be influential