bring out the worst in (someone)

Translations
выявлять худшие черты в (ком-то)
Stressful situations tend to bring out the worst in him.
Стрессовые ситуации, как правило, выявляют в нем худшие черты.
Definitions
To cause someone to display their most negative qualities, behaviors, or emotions, often as a reaction to a particular situation or another person's influence.
Words
bring

verb
вызывать
out

adverb
наружу
the

article or possessive pronoun
определённый артикль
worst

noun
худшее
in

preposition
в
someone

pronoun
ком-либо