oblige
UK: əˈblaɪdʒ | US: əˈblaɪdʒ
vt. to require or constrain someone to do something, often as a legal or moral duty
vt. to do a favor or service for someone, often out of courtesy
vi. (archaic) to be indebted or grateful
The word "oblige" originates from Latin obligare (ob- "toward" + ligare "to bind"), reflecting the idea of binding someone to a duty or favor. It entered English via Old French obliger, retaining the core sense of moral or social constraint. Over time, it evolved to emphasize voluntary courtesy ("to do a favor") alongside its original obligatory meaning.
The contract obliges both parties to fulfill their agreed terms.
She obliged her friend by babysitting for the evening.
"Much obliged!" he said, thanking the stranger for the help.
The law obliges employers to provide safe working conditions.
He felt obliged to attend the meeting despite his busy schedule.