causing great dread, fear, or terror; terrible

a dreadful storm.

inspiring awe or reverence.

extremely bad, unpleasant, or ugly

dreadful cooking; a dreadful hat.

penny dreadful.

a periodical given to highly sensational matter.

adjective

pleasant , pleasing , welcomed , wonderful

adjective

abominable , alarming , appalling , atrocious , awful , bad , beastly , creepy * , dire , distressing , fearful , formidable , frightful , frozen , ghastly , godawful , grievous , grim , grody , gross * , hideous , horrendous , horrific , icky * , lousy , mean , monstrous , rotten , shameful , shocking , shuddersome , spooky , terrible , terrific , tragic , tremendous , wicked , direful , fearsome , redoubtable , scary , horrible , distasteful , dread , grisly , horrid , revolting , unpleasant