Synonyms of the word

motherless

• adj. Without a living mother.
• adj. Without mother (mucilaginous substance in fermenting liquid).
• adj. (figuratively) Without a history or predecessor.
• adv. (South Africa, Australia, slang) very, completely (especially in reference to drunkenness).

parentless

• adj. Having no (living) parent.
• adj. (computing) Having no parent in a data structure.

unparented

• adj. Having no parent, or no acknowledged parent.