oblige
To agree to do something because you’re too scared to say no or you’re too lazy to explain why you’re too scared to say no.
You say yes to babysitting your cousin’s brat because you’re too scared to tell your cousin you hate his brat.
You agree to attend your ex’s wedding because you’re too scared to tell him you think he’s a waste of oxygen.
You say you’ll help your mom move because you’re too scared to tell her you hate her new boyfriend.