We found 20 dictionaries that define the word at best:

General (15 matching dictionaries)

1. at best: Merriam-Webster
2. at best: Oxford Learner's Dictionaries
3. at best: Collins English Dictionary
4. at best: Vocabulary.com
5. at-best, at best: Wordnik
6. at best: Cambridge Advanced Learner's Dictionary
7. at best: Wiktionary
8. At best, at best: Dictionary.com
9. at best: Rhymezone
10. at best: FreeDictionary.org
11. at best: Mnemonic Dictionary
12. at best: TheFreeDictionary.com
13. at best: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)

14. INVESTORWORDS (No longer online)
15. at best: Finance-Glossary.com
16. BusinessDictionary.com (No longer online)

Miscellaneous (1 matching dictionary)

17. at best: Idioms

Slang (1 matching dictionary)

18. at best: Urban Dictionary

Definitions from WordNet (at best) ▸ adverb:  under the best of conditions ("At best we'll lose only the money") Opposite: worst Types: mediocre, lousy, terrible, poor, bad, not good, more... Phrases: at the best, at the best of times, at its best, Eric Clapton at His Best, at my best, more... ▸ Words similar to at best ▸ Usage examples for at best ▸ Idioms related to at best ▸ Wikipedia articles (New!) ▸ Words that often appear near at best ▸ Rhymes of at best ▸ Invented words related to at best