self
US /self/
UK /self/

1.
a person's essential being that distinguishes them from others, especially considered as the object of introspection or reflexive action
:
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He needs to find his true self.
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She is always putting others before her self.
1.
of the same color or material throughout
:
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The chair was upholstered in self-colored fabric.
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The dress had a self-patterned design.
1.
used to form compound adjectives with the meaning 'of oneself' or 'by oneself'
:
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He is a self-taught musician.
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The car has a self-driving feature.