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

Inward character, perceptions, or feelings, The inner side or part; the interior, as opposed to the outside or exterior_ as, the inside of the hand; the inside of a house; the inside of a newspaper, The part within; interior or internal portion; content, adjective_ the inner part of a race course; hence, colloquially, advantage of place, facilities, contacts, etc, in competition, Originating from or arranged by someone inside an organisation, adverb_ Within the sides of; in the interior; contained within, Within or towards the interior of something, especially a building

One who plans or forms a plan; a projector, A notebook or software in which one keeps notations of items such as appointments, tasks, projects, and contacts

Plural form of contact, contact lenses, verb_ Third-person singular simple present indicative form of contact

exclude from one's contacts on a social network site