We found 9 dictionaries that define the word for one thing:

General (7 matching dictionaries)

1. for one thing: Oxford Learner's Dictionaries
2. for one thing: Cambridge Advanced Learner's Dictionary
3. for one thing: Wiktionary
4. for one thing: Rhymezone
5. for one thing: Longman Dictionary of Contemporary English

Miscellaneous (1 matching dictionary)

6. for one thing: Idioms

Slang (1 matching dictionary)

7. for one thing: Urban Dictionary

Definitions from WordNet (for one thing) ▸ adverb:  for a particular example ("For one thing, you must work harder") Opposite: for another, on other hand, conversely Types: for another thing, for another, more... Phrases: is for more than one thing, notorious for doing one thing, only useful for one thing, only for one thing, more... ▸ Words similar to for one thing ▸ Usage examples for for one thing ▸ Idioms related to for one thing ▸ Wikipedia articles (New!) ▸ Words that often appear near for one thing ▸ Rhymes of for one thing ▸ Invented words related to for one thing