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vestigial

adjective

/vɛˈstɪdʒiəl/

Meaning

Relating to a small, undeveloped remnant of something that was once much larger or more functional.

Humans have a vestigial tailbone that no longer serves its original purpose.

rudimentary, undeveloped, residual, atrophied

developed, functional

vestigial organ, vestigial structure, vestigial remains

producing a desired or intended effect, often used in formal contexts

Required by law or a rule; obligatory.

Engaging or ready to engage in physically energetic pursuits; characterized by energetic work, parti...

responding to situations rather than initiating them; chemically active

having or showing great activity; vigorous; full of energy

able to be considered or thought about