on mark (adjective) dead-on: exactly correct
Sinonime: all-overs,
angst, ants in pants, anxiousness,
apprehension, botheration, butterflies,
care, cold sweat,
concern, creeps, disquiet, disquietude,
distress,
doubt, downer,
drag*,
dread, fidgets, flap,
foreboding, fretfulness,
fuss*, goose bumps, heebie-jeebies, jitters, jumps,
misery, misgiving, mistrust, nail-biting, needles, nervousness,
panic*, pins and needles, restlessness, shakes, shivers,
solicitude,
suffering,
suspense,
sweat*,
trouble,
uncertainty, uneasiness, watchfulness, willies, worriment,
worry