We found 14 dictionaries that define the word tit-for-tat:

General (9 matching dictionaries)

1. tit-for-tat: Merriam-Webster
2. tit-for-tat, tit-for-tat: Collins English Dictionary
3. tit-for-tat: Wordnik
4. tit-for-tat: Cambridge Advanced Learner's Dictionary
5. tit-for-tat: Wiktionary
6. Tit-for-tat: Wikipedia, the Free Encyclopedia
7. Tit-for-tat: TheFreeDictionary.com

Business (1 matching dictionary)

8. tit-for-tat: Glossary of research economics

Computing (1 matching dictionary)

9. Tit-for-tat: Encyclopedia

Miscellaneous (1 matching dictionary)

10. tit-for-tat: Idioms

Science (2 matching dictionaries)

11. Tit-for-Tat: Eric Weisstein's World of Mathematics
12. The Computational Beauty of Nature (No longer online)

Definitions from Wiktionary ( ) ▸ adjective:  Having the characteristic of returning bad for bad. Similar: backlashed, dog-eat-dog, terribad, internecine, counterbattery, gone bad, scorched-earth, game, out for blood, antibattery, more... ▸ Words similar to tit-for-tat ▸ Usage examples for tit-for-tat ▸ Idioms related to tit-for-tat ▸ Wikipedia articles (New!) ▸ Popular nouns described by tit-for-tat ▸ Words that often appear near tit-for-tat ▸ Rhymes of tit-for-tat ▸ Invented words related to tit-for-tat