| Tour starter | 12 |
| The Name of the Rose author | 30 |
| Terrorist or sphere preceder | 28 |
| System startup? | 15 |
| System start-up | 15 |
| System prefix | 13 |
| System or sphere preceder | 25 |
| System or friendly preceder | 27 |
| System lead-in | 14 |
| System intro | 12 |
| Sustainable prefix | 18 |
| Sustainability prefix | 21 |
| Start to tour? | 14 |
| Start to freak? | 15 |
| Start of a Sierra Club tour? | 28 |
| Start for type or tourism | 25 |
| Start for friendly | 18 |
| Semiotician Umberto | 19 |
| Prefix with warrior and type | 28 |
| Prefix with toxicology | 22 |
| Prefix with tourism or terrorism | 32 |
| Prefix with tour or type | 24 |
| Prefix with terrorist | 21 |
| Prefix with sphere or system | 28 |
| Prefix with sphere or disaster | 30 |
| Prefix with sphere and tourism | 30 |
| Prefix with sphere and politics | 31 |
| Prefix with sensitive | 21 |
| Prefix with resort | 18 |
| Prefix with region | 18 |
| Prefix with law or tourist | 26 |
| Prefix with friendly or warrior | 31 |
| Prefix with friendly or conscious | 33 |
| Prefix with freak or friendly | 29 |
| Prefix with freak | 17 |
| Prefix with feminist and freak | 30 |
| Prefix with efficiency | 22 |
| Prefix with design | 18 |
| Prefix with consumer or catastrophe | 35 |
| Prefix with climate | 19 |
| Prefix with catastrophe | 23 |
| Prefix with car or warrior | 26 |
| Prefix with car or law | 22 |
| Prefix with balance | 19 |
| Prefix with "friendly" and "warrior" | 56 |
| Prefix with "friendly" | 32 |
| Prefix for terrorism | 20 |
| Prefix for system or type | 25 |
| Prefix for responsibly sourced products | 39 |
| Prefix for nomy or logy | 23 |
| Prefix for logy or nomy | 23 |
| Prefix for logy and nomics | 26 |
| Prefix for freak | 16 |
| Prefix for "freak" or "tourist" | 51 |
| Prefix before "tourism" or "terrorism" | 58 |
| Prefix associated with being green | 34 |
| Pref. preferred by the "green police" | 47 |
| Popular 90's essayist | 25 |
| Piedmont-born author | 20 |
| Novelist from Piedmont | 22 |
| Nonpolluting | 12 |
| Non-polluter's prefix | 25 |
| Nature prefix | 13 |
| Natural prefix | 14 |
| Modern prefix with village | 26 |
| Modern prefix with tourism | 26 |
| Modern prefix with friendly | 27 |
| Modern prefix with balance | 26 |
| Letters for green jobs | 22 |
| Lead-in for system or species | 29 |
| Kind of freak or system | 23 |
| Italian medievalist | 19 |
| Italian author of "The Prague Cemetery" | 49 |
| Italian author | 14 |
| It can mean "green" | 29 |
| Intro to system | 15 |
| Household: Prefix | 17 |
| Head of tourism | 15 |
| He wrote ''The Name of the Rose'' | 49 |
| Habitat prefix | 14 |
| Greenpeace prefix | 17 |
| Green, in combinations | 22 |
| Green up front? | 15 |
| Green start | 11 |
| Green prefix? | 13 |
| Green pref. | 11 |
| Green piece? | 12 |
| Good prefix for Earth Day | 25 |
| Friendly prefix? | 16 |
| Friendly prefix | 15 |
| Freak beginning | 15 |
| Far sound: Sp. | 14 |
| Famed Italian writer | 20 |
| EPA prefix | 10 |
| Environmentally minded, for short | 33 |
| Environmentally minded | 22 |
| Environmentally concerned | 25 |
| Environmental-related prefix | 28 |
| Environmental intro | 19 |
| Environment: Comb. form | 23 |