Out of character - unlike one's usual behaviour. Example - "Ann's remark today was out of character. It was out of character of her to act so inappropriately"
To rise to the occasion - to show that you can deal with a situation successfully. Example - "In the exam, she rose to the occasion and wrote a brilliant essay"
To make light of - to act as if something is not serious, especially when it is serious. Example - "They've both had knee injuries but the two friends make light of their weaknesses"
To throw somebody a curve ball - to surprise someone with something that is difficult or unpleasant to deal with. Example - "Mother Nature threw us a curve ball last winter with record-breaking amounts of snow."
To pull something out of the air - to produce something seemingly out of nowhere. Example - "Where am I gonna get the money? I can't just pull it out of the air"
To blow something out of proportion - to treat a particular event or problem far too serious. Example - "It's ridiculous! We have a tiny argument and you blow the whole thing out of proportion"
To hang your hat on - to depend on something. Example - "The company's earnings were up to 70% last year, but I don't think you can hang your hat on that kind of growth"
To hedge one's bets - to protect yourself against loss by supporting more than one possible result or both sides in a competition. Example - "They're hedging their bets and keeping up contacts with both companies"
To make allowances for somebody/something - to consider particular things relating to someone/something. Example - "We try to make allowances for our students' different language backgrounds"
To swear by something - to strongly believe in something. Example - "Though there's no scientific evidence for this method of finding water, some farmers swear by it"
To swallow something hook, line and sinker - to believe something completely. Example - "I made up a story about why I was so late. The boss swallowed it hook, line and sinker."
Phlegmatic - calm and composed; apathetic. Example - "These girls, who are generally so phlegmatic, change their character on cleaning day and become frantic"
Cagey - not willing to say everything that you know about something; hesitant about committing oneself. Example - "He's cagey about what he was paid for his business"
To pique someone's curiosity/interest - to arouse interest; to arouse curiosity. Example - "The professor tried to pique the students' interests in French literature"
Faint of heart - people who are squeamish; someone who is sickened or disturbed by unpleasantness or challenge. Example - "The pathway around the top of the volcano, near the crater, is not for the faint of heart"
Beleaguered - having a lot of problems and difficulties; put in a very difficult situation. Example - "The arrival of the fresh medical supplies was a welcome sight for the beleaguered doctors working in the refugee campus"
To eat humble pie - to admit that you were wrong. Example - "After boasting that his company could outperform the industry's best, he's been forced to eat humble pie"
To put someone through the wringer - to give someone a difficult time; to make someone have a very unpleasant experience. Example - "They really put me through the wringer in my interview"
You have got to hand it to somebody - expression used to refer to someone who has done something successfully. Example - "I mean, you have got to hand it to her. She's brought up three children on her own"