1‘he sat in the waiting room, full of trepidation’
fear, apprehension, dread, fearfulness, apprehensiveness, agitation, anxiety, worry, nervousness, tension, misgivings, unease, uneasiness, foreboding, disquiet, disquietude, perturbation, discomposure, dismay, consternation, alarm, panic, trembling, jumpiness
informal butterflies, jitteriness, the jitters, a cold sweat, a blue funk, the heebie-jeebies, the willies, the shakes, the yips, the jim-jams, collywobbles, cold feet
British informal the, the screaming abdabs, the screaming habdabs
Australian rhyming slang Joe Blakes
calm, equanimity, composure
We take a look at several popular, though confusing, punctuation marks.