Dictionary / Vocabulary / 用心
ようじん
care; precaution; guarding; caution
JLPT N3 common word Also written 要心、要慎
用心は勇気の大半。
Discretion is the better part of valor.
用心に傘を持っていった方がいい。
You had better take your umbrella in case.
用心しすぎることはない。
Much caution does no harm.