| reinforce(stimulate, excite, boost, strengthen, animate) |
| rile(verb, touch, raise, provoke, stimulate) |
| rouse(verb, touch, start, raise, stimulate) |
| roust(verb, touch, raise, provoke, stimulate) |
| rout(verb, touch, raise, provoke, stimulate) |
| set(verb, touch, raise, provoke, stimulate) |
| shine(verb, cast, animate, kindle, brighten) |
| shock |
| short |
| short circuit |
| spark(verb, touch, raise, provoke, stimulate) |
| spook(verb, touch, raise, provoke, stimulate) |
| spot(verb, animate, shine, kindle, brighten) |
| spotlight(verb, animate, shine, kindle, weighted) |
| spur(verb, touch, raise, provoke, stimulate) |
| start up(verb, expression, phrasal verb, form, start) |
| step down |
| step up |
| stiffen |
| stimulate(verb, touch, start, raise, excite) |