SECULARIZE is validvalid

to make secular [v SECULARIZED, SECULARIZES, SECULARIZING] : SECULARIZATION [n], SECULARIZER [n]

139,909 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 SECULARISE [v SECULARIZED, SECULARIZING, SECULARIZES]