Important Idioms and Phrases starting with Alphabet- S
| S.No. | Idioms/Phrases | Meaning |
| 1. | Sail under false colours | To pretend to be something that you are not |
| 2. | Save ones’ skin | To save oneself |
| 3. | See eye-to-eye | Showing agreement/ to agree |
| 4. | See pink elephants | Any visual hallucination arising due to intoxication |
| 5. | See red | Be very angry |
| 6. | See through | Comprehend/ understand |
| 7. | Set at naught | To disregard or treat as of no importance |
| 8. | Set one’s face against | To oppose with determination |
| 9. | Set one’s heart on | To have as one’s ambition to obtain something |
| 10. | Set one’s teeth on edge | To irritate or annoy someone |
| 11. | Set the Thames on fire | To achieve something amazing |
| 12. | Shoulder to shoulder | With united effort |
| 13. | Show white feather | To show cowardice |
| 14. | Sine die | Indefinitely |
| 15. | Sit on the fence | Refuse to take side in a dispute |
| 16. | Slip of the tongue | Spoken unintentionally |
| 17. | Slow coach | A person with lazy approach of working |
| 18. | Small fry | Insignificant person |
| 19. | Smell a rat | To suspect of something wrong done |
| 20. | Smooth sailing | Easy progress |
| 21. | Snake in the grass | A secret enemy |
| 22. | Shake in the shoes | A tremble with fear or apprehension |
| 23. | Sow the dragon’s teeth | To create future troubles for yourself or others |
| 24. | Speak one’s mind | Speak what one really thinks |
| 25. | Spick and span | In order/ neat and clean |
| 26. | Stand on one’s own legs | To be self-dependent |
| 27. | Stand/Stick to one’s guns | To be strict and determined |
| 28. | Stand somebody in good stead | To be of great use and benefit to someone |
| 29. | Steal a march | To obtain an advantage by secret means |
| 30. | Step into another’s shoes | To take over a job/responsibility of some other person |
| 31. | Stiff-necked person | Stubborn or arrogant |
| 32. | Stir a finger | Making effort |
| 33. | Stone’s throw | Very near |
| 34. | Street Arabs | A homeless person (especially who survives by begging) |
| 35. | Sum and substance | Main idea or gist |
| 36. | Swan song | The last ceremony or farewell |
| 37. | Sweat of one’s brow | Hard labour |
| 38. | Swelled head | Grand opinion of oneself/conceited |
| 39. | Sworn enemies | People hating each other a lot |
Plz give examples of these idioms also. I love this site.