| Syringe measurements: abbr. | 27 |
| Syringe measures, for short | 27 |
| Syringe tips | 12 |
| Syringe units, briefly | 22 |
| Syringe, for short | 18 |
| Syringes' contents | 22 |
| Syringes, briefly | 17 |
| Syringes, for short | 19 |
| Syrinx | 6 |
| Syrinx player | 13 |
| Syrup base | 10 |
| Syrup bases | 11 |
| Syrup brand | 11 |
| Syrup choice | 12 |
| Syrup container | 15 |
| Syrup flavor | 12 |
| Syrup for a poisoning victim | 28 |
| Syrup for pecan pie, perhaps | 28 |
| Syrup in the medicine cabinet | 29 |
| Syrup ingredient | 16 |
| Syrup made from pomegranate juice | 33 |
| Syrup name | 10 |
| Syrup of ipecac, e.g. | 21 |
| Syrup of ___ | 12 |
| Syrup presented to the jury? | 28 |
| Syrup provider | 14 |
| Syrup sap source | 16 |
| Syrup source | 12 |
| Syrup source for marshmallows | 29 |
| Syrup sources | 13 |
| Syrup specification | 19 |
| Syrup tree | 10 |
| Syrup trees | 11 |
| Syrup type | 10 |
| Syrup used after some poisonings | 32 |
| Syrup used in some fake blood | 29 |
| Syrup used to purge accidentally-swallowed poison | 49 |
| Syrup, before processing | 24 |
| Syrup, essentially | 18 |
| Syrup-soaked cake | 17 |
| Syrup-topped pastry | 19 |
| Syrup-yielding tree | 19 |
| Syrupy | 6 |
| Syrupy alcohol used as a sweetener | 34 |
| Syrupy concoction | 17 |
| Syrupy drink | 12 |
| Syrupy liqueur | 14 |
| Syrupy sedative | 15 |
| Syrupy stuff | 12 |
| Syrupy treat | 12 |
| Sys -- | 6 |
| Sysadmin's area of expertise | 32 |
| Sysadmins may run them | 22 |
| Sysop concern | 13 |
| Sysop, for one | 14 |
| Syst. | 5 |
| Syst. first implemented during W.W. I | 37 |
| Syst. for sharing ideas | 23 |
| Syst. for talking without speaking | 34 |
| Syst. of laws | 13 |
| Syst. of measurement | 20 |
| Syst. of sound syllables | 24 |
| Syst. of talking with one's hands | 37 |
| Syst. of unspoken words | 23 |
| Syst. of unwritten words | 24 |
| Syst. with gestures | 19 |
| Syst. with hand signals | 23 |
| System | 6 |
| System actions | 14 |
| System adopted by most of the world | 35 |
| System developed at Bell Laboratories | 37 |
| System developed at Bell Labs | 29 |
| System ending? | 14 |
| System espoused by Castro | 25 |
| System espoused by Debs | 23 |
| System espoused by Jefferson | 28 |
| System espoused by tyrants | 26 |
| System fighters | 15 |
| System for blind readers | 24 |
| System for Chico and Stanislaus | 31 |
| System for connecting computers | 31 |
| System for determining the top NCAA football team | 49 |
| System for keeping closets organized? | 37 |
| System for linking computers | 28 |
| System for linking PCs | 22 |
| System for measuring public speaking proficiency? | 49 |
| System for pilots | 17 |
| System for servers | 18 |
| System for some servers | 23 |
| System for which Super Mario Land was developed | 47 |
| System for would-be readers | 27 |
| System i manufacturer | 21 |
| System identity | 15 |
| System in a submarine | 21 |
| System in some modern-day cars | 30 |
| System infiltrator | 18 |
| System intro | 12 |
| System involving arm-waving | 27 |
| System lead-in | 14 |
| System of a Down | 16 |