simple past tense and past participle of frown upon

(idiomatic) Under discussion or consideration.

Alternative form of on the heels of

To regard with passionate affection. / To pay overt attention to, as from sycophancy or intense interest. / (military) To hover around. / (idiomatic) To depend upon.

To appeal to, make a demand of, rely on; to utilize or make use of, as a source.

Alternative form of call on (certain senses).

Alternative form of rely on

simple past tense and past participle of reflect upon

Third-person singular simple present indicative form of reflect upon

present participle of reflect upon