TERRIBLE
awful, dire, direful, dread, dreaded, dreadful, fearful, fearsome, frightening, horrendous, horrific, terrible
(adjective) causing fear or dread or terror; “the awful war”; “an awful risk”; “dire news”; “a career or vengeance so direful that London was shocked”; “the dread presence of the headmaster”; “polio is no longer the dreaded disease it once was”; “a dreadful storm”; “a fearful howling”; “horrendous explosions shook the city”; “a terrible curse”
atrocious, abominable, awful, dreadful, painful, terrible, unspeakable
(adjective) exceptionally bad or displeasing; “atrocious taste”; “abominable workmanship”; “an awful voice”; “dreadful manners”; “a painful performance”; “terrible handwriting”; “an unspeakable odor came sweeping into the room”
severe, terrible, wicked
(adjective) intensely or extremely bad or unpleasant in degree or quality; “severe pain”; “a severe case of flu”; “a terrible cough”; “under wicked fire from the enemy’s guns”; “a wicked cough”
frightful, terrible, awful, tremendous
(adjective) extreme in degree or extent or amount or impact; “in a frightful hurry”; “spent a frightful amount of money”
Source: WordNet® 3.1
Etymology
Adjective
terrible (comparative terribler or more terrible, superlative terriblest or most terrible)
Dreadful; causing terror, alarm and fear; awesome
Formidable, powerful.
Intense; extreme in degree or extent.
Unpleasant; disagreeable.
Very bad; lousy.
Synonyms
• See also frightening
Antonyms
• (very bad): excellent
Adverb
terrible (comparative more terrible, superlative most terrible)
(colloquial, dialect) In a terrible way; to a terrible extent; terribly; awfully.
Anagrams
• treblier
Source: Wiktionary
Ter"ri*ble, a. Etym: [F., fr. L. terribilis, fr. terrere to frighten.
See Terror.]
1. Adapted or likely to excite terror, awe, or dread; dreadful;
formidable.
Prudent in peace, and terrible in war. Prior.
Thou shalt not be affrighted at them; for the Lord thy God is among
you, a mighty God and terrible. Deut. vii. 21.
2. Excessive; extreme; severe. [Colloq.]
The terrible coldness of the season. Clarendon.
Syn.
– Terrific; fearful; frightful; formidable; dreadful; horrible;
shocking; awful.
– Ter"ri*ble*ness, n.
– Ter"ri*bly, adv.
Source: Webster’s Unabridged Dictionary 1913 Edition