To have to act very sensitively to avoid offending someone.
15
Spill the beans
Reveal a secret.
15
In a nutshell
In just a few words.
15
Bad egg
Someone who does bad things or who you don’t trust
15
Hard nut to crack
A difficult problem or a difficult person
15
Put all my eggs in one basket
Rely on a unique course of events, on a unique venture or stream of income. Risk everything to the success or failure of one thing.
15
Low-hanging fruit
Easy tasks, the most easily achieved of a set of tasks, measures, goals, etc.
15
Sell like hot cakes
Sell quickly and in large quantities.
15
Bite off more than you can chew
Try to do more than one is capable of doing.
15
A tough cookie
A very determined person.
15
Too many cooks spoil the broth
A project works best if there is input from a limited number of people.
15
You can’t have your cake and eat it, too
You can’t enjoy both of two desirable but mutually exclusive alternatives (can’t have your own business, take care of everything, succeed, and also not be tired
15
Take with a grain of salt
Be a bit skeptical about it. Only believe part of it.
15
Greatest thing since sliced bread
Something is the best and most useful innovation or development invented for a long time.
15
The icing on the cake
Something that makes a good situation even better. (In the US, also: the frosting on the cake.)