生性

nature; disposition; temperament; character

谨慎

prudent; cautious; careful; discreet; circumspect; wary; guarded; watchful; chary; gingerly; vigilant; cautiously; prudently; carefully; discreetly; caution; prudence; circumspection; wariness; be cautious; be prudent; be careful; be discreet; exercise caution; with caution; with care; with prudence; with discretion