おっかない (translations)→ awful hairy threatening
ぞっとする (translations)→ detest dismaying dreadful frighten frightening gag hate horror tremendous uneasy willies
恐るべき (translations)→ fantastic horrendous terrible wondrous
恐ろしい (translations)→ deadly fearful ferocious grisly harsh horrible horrid horrific horrifying inscrutable loathsome mighty terrifying wild