to teethe / to cut one's teeth

armed to the teeth

voraciously / readily, enthusiastically, to the full, with both hands

voraciously / readily, enthusiastically, to the full, with both hands

(figuratively) to talk under one's breath, to mutter, to mumble

(informal, figuratively) to be knackered, to be exhausted / (informal, figuratively) to be on edge

(figuratively) to smile from ear to ear, to smile all over one's face, to grin like a Cheshire cat

and still going strong, and still fighting fit, alive and kicking (used to indicate that an old person is still youthful despite their age)

(figuratively, transitive with sur) to cut one's teeth

(idiomatic) to come up against a brick wall