Formal:
* The committee members assented to the proposed budget after a lengthy discussion.
* The king's assent to the bill made it law.
* Her silence was taken as assent to the proposal.
Informal:
* "Can I borrow your phone?" "Sure," she said, assenting with a nod.
* The children assented to the idea of going to the park, their eyes shining with excitement.
Figurative:
* The wind seemed to assent to the storm's arrival, picking up in speed and ferocity.
Remember, "assent" usually implies a formal agreement or acceptance, often through a spoken or written statement.