bird-brained	stupid
scatterbrained	careless, forgetful
brainchild	sb's idea or invention
to brainwash	to make sb change their believes by very stron persuasion
brainwave	a sudden clever idea
brainy	intelligent
to pick sb's brain	to question sb who knows a lot about a subject
abundant	obfity / rich
conspicuous	dobrze widoczny / widespread
amiable	miły / very friendly
ardouos	gorliwy / exhausting
prevalent	przewazajacy / most evident
inexorable	nieublagany / unchangeable
preposterous	smieszny / not sensible
irrevocable	nieodwolalny / unavoidable
work to rule	pracowac zgodnie z zasadami
hit the bottle	zagladac do kieliszka
pluck the courage	zebrac sie na odwage
lead the field in	byc pionnierem w
spare the rod	oszczedzic pret (nie bic dzieci)
burn the candle at both ends	pracowac za dwoch