parentless vs unparented

parentless and unparented both are adjectives.

Word	Noun	Adjective	Verb	Adverb
parentless	No	Yes	No	No
unparented	No	Yes	No	No

As adjectives, parentless and unparented are synonyms defined as:

parentless and unparented: having no parent or parents or not cared for by parent surrogates

parentless (adjective)	unparented (adjective)
having no parent or parents or not cared for by parent surrogates	having no parent or parents or not cared for by parent surrogates