a natural tendency

Translations
естественная склонность
He has a natural tendency to be cautious.
У него есть естественная склонность быть осторожным.
Definitions
A natural tendency refers to an inherent inclination or predisposition that an individual or organism has towards certain behaviors, actions, or reactions, often influenced by genetic, environmental, or psychological factors.
Words
tendency

noun
тенденция
natural

adjective
естественный