adjective
alarmed, apprehensive
Synonyms: aflutter, afraid, aghast, agitated, anxious, chicken, chickenhearted, diffident, discomposed, disquieted, disturbed, fainthearted, frightened, goose-bumpy, have cold feet, hesitant, in a dither, intimidated, jittery, jumpy, lily-livered, mousy, nerveless, nervous, nervy, panicky, perturbed, phobic, pusillanimous, quivery, rabbity, running scared, scared, shaky, sheepish, shrinking, shy, skittish, solicitous, spineless, tense, timid, timorous, tremulous, uneasy, unmanly, weak-kneed, worried, yellow
Antonyms: bold, brave, courageous, inapprehensive, unafraid, unfearful
adjective
horrifying
Synonyms: appalling, astounding, atrocious, awful, baleful, bloodcurdling, creepy, dire, distressing, dreadful, eerie, formidable, frightful, ghastly, ghoulish, grievous, grim, grisly, gruesome, hair-raising, hideous, horrendous, horrible, horrific, lurid, macabre, monstrous, morbid, overwhelming, redoubtable, shocking, shuddersome, sinister, strange, sublime, terrible, tremendous, unearthly, unspeakable
Antonyms: good, nice, pleasant