close-mouthed, uncommunicative, taciturn, reserved, inenarrable, tightlipped, reticent, incommunicative, retained, not catching, undescribable, indescribable, uncommunicable, words, inexpressible, unutterable, restraint, close, indefinable, unspeakable, ineffable, kept in, nameless, silent
- Even in that passage, full as it is of all the quietness of the English countryside, something of the secret of Gilbert White, his ever living incommunicable charm may be found: his extraordinary and gentle gift of becoming, as it were, one with the things of which he writes, his wonderfully sympathetic approach to us, his so simple and so consummate manner. - "England of My Heart--Spring", Edward Hutton.
- Anna began, but ceased as if the lost relic stood for something incommunicable even to nearest and dearest. - "Kincaid's Battery", George W. Cable.
- He did not feel as she felt, and her emotion was incommunicable to him. - "Hilda Lessways", Arnold Bennett.