Thesaurus

abominable, acrophobic, afeard, afeared, afraid, aghast, agoraphobic, alarmed, alarming, algophobic, appalled, appalling, apprehensive, aquaphobic, atrocious, awful, backward, bad, baleful, base, bashful, bloodcurdling, browbeaten, bullied, caitiff, chicken, chickenhearted, chilling, claustrophobic, contemptible, corked, corky, cowardly, cowed, coy, crappy, craven, creepy, creepy-crawly, currish, dastard, dastardly, deplorable, dire, direful, dishonorable, dishonourable, dismayed, dismaying, disobedient, distressing, dread, dreaded, dreadful, evil, faint, faint-hearted, fainthearted, fearful, fearsome, forbidding, formidable, frightened, frightening, frightful, funky, ghastly, grim, grisly, gruesome, hair-raising, hairy, hangdog, hard, hopeless, horrendous, horrible, horrid, horrific, horrified, horrifying, horror-stricken, horror-struck, hunted, hydrophobic, icky, ignoble, ill, incompetent, intimidated, lamentable, lily-livered, lousy, macabre, mean, meanspirited, mediocre, menacing, minacious, minatory, mischievous, mousey, mousy, mysophobic, naughty, negative, nightmarish, no-good, numb, ominous, painful, panic-stricken, panic-struck, panicked, panicky, petrified, petrifying, pitiful, poltroon, poor, poor-spirited, pretty, pusillanimous, recreant, redoubtable, rotten, rubber, sad, scared, scarey, scary, severe, shivery, shocked, shuddery, shy, sick, sinister, sorry, stinking, stinky, stupefying, swingeing, terrible, terrific, terrified, terrifying, terror-stricken, terror-struck, threatening, timid, timorous, tough, trepid, triskaidekaphobic, ugly, unadventurous, unassertive, uncool, unfavorable, unfavourable, unmanly, unnerved, unnerving, unskilled, unspeakable, unsuitable, white-lipped, white-livered, worse, worst, xenophobic, yellow, yellow-bellied

fearful is a ADJ.