single

one-note: Idiom Meaning and Origin

one and all: Idiom Meaning and Origin

one after another: Idiom Meaning and Origin

one-way ticket to Palookaville: Idiom Meaning and Origin

one step at a time: Idiom Meaning and Origin

off the face of the earth: Idiom Meaning and Origin

off chance: Idiom Meaning and Origin

of a: Idiom Meaning and Origin

now for: Idiom Meaning and Origin

not to put too fine a point on it: Idiom Meaning and Origin

not to mention: Idiom Meaning and Origin

not long for this world: Idiom Meaning and Origin