Important Idioms and Phrases starting with Alphabet- J
| S.No. | Idioms/Phrases | Meaning |
| 1. | Jack of all trades and master of none | A person who knows many different kinds of work but is a master of none |
| 2. | Jail bird | A person who is or has been confined to jail |
| 3. | Jaundiced eye | To look at something with a prejudiced view |
| 4. | Judas kiss | False love |
| 5. | Jump to a conclusion | To come to a conclusion prematurely |