O
on edge ——> nervous // angry
on her own ——> herself
on purpose ——> intentionally
on sale ——> cheap
on the dot ——> on time // punctual
one step at a time ——> gradually
out of earshot ——> too far away to hear
out of one's mind ——> crazy // foolish idea
out of order ——> not working right
outcome ——> decision
outgoing ——> friendly
over one's head ——> not understand
overreact ——> too sensitive
on edge ——> nervous // angry
on her own ——> herself
on purpose ——> intentionally
on sale ——> cheap
on the dot ——> on time // punctual
one step at a time ——> gradually
out of earshot ——> too far away to hear
out of one's mind ——> crazy // foolish idea
out of order ——> not working right
outcome ——> decision
outgoing ——> friendly
over one's head ——> not understand
overreact ——> too sensitive