Idioms
keep (something) under one's hat
to keep a secret, to not tell something
My coworker will not say where he is going for his holiday. He wants to keep it under his hat.
keep (something) under wraps
keep a civil tongue
keep a close rein on (someone or something)
keep a close watch on (someone or something)
keep a close watch over (someone or something)
keep a secret
keep a stiff upper lip
keep a straight face
keep a tight rein on (someone or something)
keep abreast of (something)
Idioms Quiz
eat away at (someone)
blue blood
run over (something)
have one's work cut out for one
catch-22
blow the lid off (something)
show signs of (something)
top (someone or something)
come to life
tie (someone's) hands
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Science Facts
Bacteria – tiny living things that we also call germs – divide in two every 20 minutes. So, starting with one (it doesn't need a girlfriend/boyfriend), you can have over 130 million in just 9 hours!
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