We found 29 dictionaries that define the word tit for tat:

General (20 matching dictionaries)

1. tit for tat: Longman Dictionary of Contemporary English
2. tit-for-tat, tit for tat: Merriam-Webster
3. tit for tat: American Heritage Dictionary of the English Language
4. tit-for-tat, tit-for-tat, tit for tat: Collins English Dictionary
5. tit for tat: Vocabulary.com
6. tit-for-tat, tit for tat: Wordnik
7. tit-for-tat, tit for tat: Cambridge Advanced Learner's Dictionary
8. tit-for-tat, tit for tat: Wiktionary
9. tit for tat: The Wordsmyth English Dictionary-Thesaurus
10. tit for tat: Infoplease Dictionary
11. tit for tat: Dictionary.com
12. Tit for Tat (Ain't No Taking Back), Tit for Tat (disambiguation), Tit for Tat (novel), Tit for Tat, Tit-for-tat, Tit for tat: Wikipedia, the Free Encyclopedia
13. tit for tat: Rhymezone
14. TIT FOR TAT: Dictionary of Americanisms (1848)
15. Tit for Tat: Dictionary of Phrase and Fable (1898)
16. tit for tat: FreeDictionary.org
17. tit for tat: Mnemonic Dictionary
18. Tit-for-tat, tit for tat: TheFreeDictionary.com

Business (1 matching dictionary)

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

Computing (1 matching dictionary)

20. Tit-for-tat: Encyclopedia

Miscellaneous (2 matching dictionaries)

21. AbbreviationZ (No longer online)
22. tit-for-tat: Idioms

Science (3 matching dictionaries)

23. Tit-for-Tat: Eric Weisstein's World of Mathematics
24. Game Theory Dictionary (No longer online)
25. The Computational Beauty of Nature (No longer online)

Slang (2 matching dictionaries)

26. tit for tat: Green’s Dictionary of Slang
27. tit for tat: Urban Dictionary

(Note: See tit_for_tats as well.)

Definitions from Wiktionary (tit for tat) ▸ noun:  (idiomatic) Equivalent retribution; an act of returning exactly what one gets; an eye for an eye. ▸ noun:  (Cockney rhyming slang) A hat. Similar: recompense, reciprocation, reciprocity, Norm of reciprocity, punishment, payback, just deserts, mirror punishment, compensation, one and the same, more... Opposite: forgiveness, generosity, magnanimity, altruism Adjectives: confiscatory, vengeant, tit-for-tat, revanchist, abdicative, vindicatory, excusatory, pardoned, vindicative, amnestied, revengeful ▸ Words similar to tit for tat ▸ Usage examples for tit for tat ▸ Idioms related to tit for tat ▸ Wikipedia articles (New!) ▸ Words that often appear near tit for tat ▸ Rhymes of tit for tat ▸ Invented words related to tit for tat