The verb perpetuate means to cause something to continue or to last indefinitely.
Synonyms are keep going, extend, prolong, or maintain.
The word origins from the Latin (1520s) word perpetuates, a past participle of perpetuare meaning “to make perpetual”. It was also borrowed from perpetuus.
The students want to perpetuate their summer vacation.
In order to perpetuate Kenny’s high status in the society, he resorted to unethical means.
The townsfolk suggested to perpetuate the old customs of marriage.