trepidation
trep-i-da-tion / trĕp-ĭ-dā-shən
noun 1. fear; a feeling of dread or anxiety But the first lie in the series is the one you make with the greatest trepidation and the heaviest heart. Michael Chabon, 1963 - 2. (archaic) a condition of involuntary trembling or palpitation They pass the planets sev’n, and pass the fix’d, And that crystalline sphere whose balance weighs The trepidation talk’d, and that first-mov’d. From “Paradise Lost” by John Milton, 1608 - 1674