expression, godan verb (-ru)
have guts; be resolute; be unwavering
Describes a person who is mentally prepared and unshaken, especially in a difficult or tense situation. Often used when someone shows calm determination.
彼は大事なプレゼンの前でも腹が据わっている。
He remains resolute even before an important presentation.
腹が据わった態度で
He approached the negotiation with a resolute attitude.