phrase → sigh If people breathe or heave a sigh of relief, they feel happy that something unpleasant has not happened or is no longer happening.
⇒ There was a big sigh of relief once the economic reform plan was agreed.
⇒ There was an audible sigh of relief in Washington when the foreign ministers decided
to postpone the meeting.
COBUILD Advanced English Dictionary. Copyright © HarperCollins Publishers