弱音を吐く (よわねをはく) Japanese meaning | KotomoraMeanings
1
expression, godan verb (-ku)
complain weakly; whine; grumble
Used when someone voices complaints or dissatisfaction in a weak, unassertive manner, often implying a lack of resolve.
まで
頑
張
ろう
。
Let's keep going to the end without complaining.