To Conform

1. (intransitive, of persons, often followed by to) To act in accordance with expectations; to behave in the manner of others, especially as a result of social pressure.
2. (intransitive, of things, situations, etc.) To be in accordance with a set of specifications or regulations, or with a policy or guideline.
3. (transitive) To make similar in form or nature; to make suitable for a purpose; to adapt.

(to act in accordance with expectations): acquiesce, comply, go along to get along, knuckle under, submit