in-depth

on sight: Idiom Meaning and Origin

on one’s last legs: Idiom Meaning and Origin

on its merits: Idiom Meaning and Origin

one step ahead: Idiom Meaning and Origin

one after another: Idiom Meaning and Origin

one at a time: Idiom Meaning and Origin

once or twice: Idiom Meaning and Origin

old hand: Idiom Meaning and Origin

of the same stripe: Idiom Meaning and Origin

of late: Idiom Meaning and Origin

off to the races: Idiom Meaning and Origin

off the face of the earth: Idiom Meaning and Origin