| inner | (adjective) located or occurring within or closer to a center | - |
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| (adjective) exclusive to a center; especially a center of influence | - |
| (adjective) inside or closer to the inside of the body | - |
| (adjective) innermost or essential | Synonyms: internal, intimate |
| (adjective) located inward | Synonyms: interior, internal |
| (adjective) confined to an exclusive group | Synonyms: inside, privileged |
| innermost | (adjective) situated or occurring farthest within | Synonyms: inmost |
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| (adjective) being deepest within the self | Synonyms: inmost |
| innersole | (noun) the inner sole of a shoe or boot where the foot rests | Synonyms: insole |
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| innervate | (verb) stimulate to action | - |
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| (verb) supply nerves to (some organ or body part) | - |
| innervation | (noun) the distribution of nerve fibers to an organ or body region | - |
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| (noun) the neural or electrical arousal of an organ or muscle or gland | Synonyms: excitation, irritation |