Devoid of enlivening or enriching qualities: "This is . . . not at all lighthearted or amiable music. In fact, the tone is unremittingly sober and antiseptic"(Donal Henahan).
Free of disturbing or unpleasant features; sanitized: an antiseptic version of history.
n. A substance that inhibits the growth and reproduction of disease-causing microorganisms. an'ti·sep'ti·cal·ly adv.