Bad / Weak
relent - To surrender or agree after resisting or opposing, often due to persuasion, pressure, or changing circumstances.

Our of pride, he would always refuse to accept assitance, but when things hit rock bottom, he relented, and finally accepted help from others.
collapse - To lose strength or energy, and fall down or cave in suddenly, often due to structural failure or overwhelming force.

After months of hard work and stress, his health began to collapse, and he realized that for survival he had to slow down.