We found 9 dictionaries that define the word third-rater:

General (9 matching dictionaries)

1. third-rater: Merriam-Webster
2. third-rater: Oxford Learner's Dictionaries
3. third-rater, third-rater: Collins English Dictionary
4. third-rater: Vocabulary.com
5. third-rater: Dictionary.com
6. third-rater: Rhymezone
7. third-rater: FreeDictionary.org
8. third-rater: Mnemonic Dictionary
9. third-rater: TheFreeDictionary.com

(Note: See third-raters as well.)

Definitions from WordNet (third-rater) ▸ noun:  one who is third-rate or distinctly inferior ▸ Words similar to third-rater ▸ Usage examples for third-rater ▸ Idioms related to third-rater ▸ Wikipedia articles (New!) ▸ Popular adjectives describing third-rater ▸ Words that often appear near third-rater ▸ Rhymes of third-rater ▸ Invented words related to third-rater