fulfil a promise, be faithful, maintain relations, have regard for, accommodate,

to do utmost, to be sincere to

to continue, to fulfill

perform (one's) part, carry out to the end, be constant to, support

to carry on or through, to maintain the support for, to keep alongside (someone) till the end

carry formal compliments

to follow a manner or custom

celebration in penury, do something ostentatious even when unable to afford it