1. Head start
Meaning: An advantage over everyone else
E.g. You've got a head start over / another’s trying to get the job because you've got relevant work experience.
2. Sight for sore eyes
Meaning: A sight that makes you happy
E.g. You're a sight for sore eyes!
3. A weight off your shoulders
Meaning: You no longer worry about something or deal with something difficult
E.g. Talking over my problem with myclose friend was a weight off my shoulders.
4. Pain in the neck
Meaning: Someone or something making your life difficult
E.g. This calculus homework is a real pain in the neck.
5. Gut feeling
Meaning: A sense or impression that your subconscious has about a person or situation
E.g. Jennifer's mother had a gut feeling thatsomething was wrong when her daughter wasn't home by 10o'clock.
6. Hands are tied
Meaning: You are prevented from doing something. It is not within your power.
E.g. I'd like to raise people's salaries but my hands are tied.
7. Joined at the hip
Meaning: To be exceptionally close to someone
E.g. Amy and her boss were joined at the hip; you never saw one without the other.
8. Week at the knees
Meaning: To feel emotion so strongly that it makes you feel unstable on your feet.
E.g. The thought of kissing him made me go weak at the knees.
9. Achilles heel
Meaning: A weakness that can result in failure
E.g. Maths has always been my achilles heel.
10. Find your feet
Meaning: To adjust to a new place or situation
E.g. Did it take you long to find your feet when you started your new job?