As adjectives the difference between parentlike and patentlike
is that parentlike
is resembling or characteristic of a parent while patentlike
is having some characteristics of a patent.
As a noun parent
is one of the two persons from whom one is immediately biologically descended; a mother or father.
As a verb parent
is to act as parent, to raise or rear.
As an adjective parentlike is
resembling or characteristic of a parent.