Thesaurus

Synonyms for Forbidding include:

acerb, acerbic, acid, acrid, afflictive, alarming, appalling, atrocious, awful, baleful, beastly, bitter, blistering, bloodcurdling, caustic, chilling, creepy, creepy-crawly, dire, direful, dismaying, displeasing, dour, dread, dreaded, dreadful, embarrassing, fearful, fearsome, forbidding, formidable, frightening, frightful, ghastly, god-awful, grim, grisly, gruesome, hair-raising, hairy, harsh, hellish, horrendous, horrible, horrific, horrifying, hot, ill-natured, macabre, menacing, minacious, minatory, mortifying, nasty, nightmarish, offensive, ominous, painful, petrifying, rebarbative, redoubtable, repellant, repellent, rough, scarey, scary, sharp, sharp-worded, shivery, shuddery, sick, sinister, sore, stupefying, sulfurous, sulphurous, tart, terrible, terrific, terrifying, threatening, ugly, ungrateful, unhappy, unnerving, unpalatable, unpleasant, venomous, virulent, vitriolic

forbidding is a ADJ.

ban, banning, forbiddance, forbidding

forbidding is a NOUN.