SECULARISE is validvalid

to secularize [v SECULARISED, SECULARISES, SECULARISING]

139,905 of 196,601 in NWL2023·also valid in CSW24

to convert from regular or monastic into secular; as, to secularize a priest or a monk, also SECULARIZE [v SECULARISED, SECULARISING, SECULARISES]