いざというとき決意がくじけた。

いざというとき決意がくじけた。

My resolution dissolved at the last moment.

いざというとき決意(けつい)がくじけた。

Izatoi utoki ketsui ga kujiketa.

疎い (うとい)

distant; estranged; disinterested; poorly informed; unfamiliar; ignorant

決意 (けつい)

decision; determination; resolution

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

挫ける (くじける)

to be disheartened; to lose heart; to be dispirited; to be crushed (emotionally); to be sprained; to be snapped; to be broken

Readings: ケツ、き.める、 -ぎ.め、き.まる、さ.く

Meanings: decide, fix, agree upon, appoint

Reading: イ

Meanings: idea, mind, heart, taste, thought, desire, care, liking