This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To turn or direct inward.

v. Psychology To concentrate (one's interests) upon oneself.

v. Medicine To turn (a tubular organ or part) inward upon itself.

n. Psychology An introverted person.

n. Medicine An anatomical structure that is capable of being introverted.

adj. Who focuses primarily on their own mind, feelings, or affairs.

n. One who focuses primarily on their own mind, feelings, or affairs.

v. To turn or bend inward.

v. To look within; to introspect.

n. A person who is introverted; one concerned predominantly with himself or his own feelings. Contrasted with extrovert.

n. A person who is shy.

n. A part that can be introverted{1}.

To turn within; direct inward or interiorly.

In zoology, to turn in, or invert; insheathe a part of within another part.

n. That which is introverted; in zoology, some part or organ which is turned in upon itself, or intus-suscepted.

n. (psychology) a person who tends to shrink from social contacts and to become preoccupied with their own thoughts

v. fold inwards

v. turn inside

"A story in the online Atlantic Monthly on how to survive in the world as an introvert is one of the most-blogged stories of the day, according to Blogdex."

extrovert   

introverted    introverting    introverts   

person    mortal    individual    someone    soul    somebody    change    modify    alter   

ambivert   

introversion    introverting    introverted   

introspect    turn    turn inside out    invaginate    intussuscept    revers   

slitch    beery    Parker    friend