We found 9 dictionaries that define the word throw for a loop:

General (4 matching dictionaries)

1. throw (someone) for a loop, throw for a loop: Merriam-Webster
2. throw for a loop: Wiktionary
3. throw for a loop: Dictionary.com
4. throw for a loop: TheFreeDictionary.com

Business (1 matching dictionary)

5. throw for a loop: Legal dictionary

Computing (1 matching dictionary)

6. throw for a loop: Encyclopedia

Medicine (1 matching dictionary)

7. throw for a loop: Medical dictionary

Miscellaneous (1 matching dictionary)

8. throw for a loop: Idioms

Slang (1 matching dictionary)

9. American-Australian Slang Dictionary (No longer online)

Definitions from Wiktionary (throw for a loop) ▸ verb:  Synonym of knock for a loop. Similar: knock sideways, knock for a loop, loop, loop-de-loop, run through, knock around, overloop, run round in circles, knock about, run in circles, more... Opposite: anticipate, expect, predict, foresee, prepare Types: surprise, shock, astonish, amaze, flabbergast, stupefy, dumbfound, bewilder, confound, more... Phrases: throw someone for a loop, more... ▸ Words similar to throw for a loop ▸ Usage examples for throw for a loop ▸ Idioms related to throw for a loop ▸ Wikipedia articles (New!) ▸ Words that often appear near throw for a loop ▸ Rhymes of throw for a loop ▸ Invented words related to throw for a loop