TERRIBLY

terribly, awfully, awful, frightfully

(adverb) used as intensifiers; “terribly interesting”; “I’m awful sorry”

terribly, atrociously, awfully, abominably, abysmally, rottenly

(adverb) in a terrible manner; “she sings terribly”

Source: WordNet® 3.1

Etymology

Adverb

terribly (comparative more terribly, superlative most terribly)

(literary or dated) So as to cause terror or awe.

Very; extremely.

Very badly.

Usage notes

• Adjectives to which "terribly" is often applied: wrong, sorry, important, difficult, hard, afraid, sad, bad, expensive, long, upset, exciting, fast, excited, slow, cold, hot, busy, concerned, pleased, interesting, painful, funny, lonely, ill, good, tired, strong, confused, serious, fond, old, angry, anxious, effective, depressed, familiar, attractive, happy, poor, hungry, sick, big, nice, small, dull, clever, dirty, proud, disappointing, sweet, original, ashamed, efficient, successful, jealous, simple, strange, cruel.

Synonyms

• (causing terror or awe): grisly (obsolete)

• (very): very, extremely, awfully, horribly

Source: Wiktionary

TERRIBLE

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