To have recourse (to) someone or something for assistance, support etc.

To happen again.

“The theme of the prodigal son recurs later in the third act.”

To recurse.

A recurrence; a coming round again.

Happening or occurring frequently, with repetition.

“He has recurring asthma attacks.”

Of a decimal: having a set of digits that is repeated indefinitely.

“Every rational number can be written as either a terminating decimal or a recurring decimal.”