We found 6 dictionaries that define the word weak at the knees:

General (5 matching dictionaries)

1. weak at the knees: Longman Dictionary of Contemporary English
2. weak at the knees: Merriam-Webster
3. weak at the knees: Oxford Learner's Dictionaries
4. weak at the knees: Cambridge Advanced Learner's Dictionary

Miscellaneous (1 matching dictionary)

5. weak at the knees: Idioms

▸ Words similar to weak at the knees ▸ Usage examples for weak at the knees ▸ Idioms related to weak at the knees ▸ Wikipedia articles (New!) ▸ Words that often appear near weak at the knees ▸ Rhymes of weak at the knees ▸ Invented words related to weak at the knees