Expression

on one’s high horse: Idiom Meaning and Origin

on in years: Idiom Meaning and Origin

on fire: Idiom Meaning and Origin

one-trick pony: Idiom Meaning and Origin

one of those things: Idiom Meaning and Origin

one of His Majesty’s bad bargains: Idiom Meaning and Origin

one-man band: Idiom Meaning and Origin

one could hear a pin drop: Idiom Meaning and Origin

on the edge: Idiom Meaning and Origin

oh well: Idiom Meaning and Origin

oh my goodness gracious: Idiom Meaning and Origin

oh my: Idiom Meaning and Origin