horrendous

Definitions

Extremely unpleasant, horrifying, or shocking.

Of very poor quality or standard; dreadful.

Examples

The traffic this morning was absolutely horrendous, causing me to be an hour late for work.

He made a horrendous mistake by deleting the entire database without creating a backup first.

The conditions in the overcrowded shelter were truly horrendous during the winter storm.

Synonyms

terrible appalling dreadful awful ghastly horrific abominable

Antonyms

wonderful delightful excellent pleasant superb lovely agreeable