| OPTIN | Choose to participate: 2 wds. |
| OPTOUT | Decline to participate (2 wds) |
| OPTSIN | Agrees to participate (2 wds.) |
| OPTSOUT | Decides not to participate: 2 wds. |
| PASSEDUP | Chose not to participate (2 wds.) |
| SITOUT | Don't participate: 2 wds. |
| SATBY | Didn't participate (2 wds.) |
| OPT | Choose to participate, with "in" |
| OPTICIAN | I make visual inspections and choose to participate with internal investigators |
| OPTS | ___ in (chooses to participate) |
| GETINONTHEACT | Want to participate (3,2,2,3,3) |
| LOOKIN | Chance to participate and see old relations (4-2) |
| PACKEDLUNCH | Meal? Wanted, first to last, to participate in bash |
| ONHAND | Willing to participate, worker readily available (2,4) |
| REELECT | Return again to participate in free lectures (2-5) |
| EXWORKS | 1,000 line up to participate in kinky sex, fresh from the factory (2-5) |
| UPFORGRABS | Available and willing to participate in talks about merger, finally (2,3,5) |
| MAMES | The Norfolk and Norwich University Hospital was one of two UK hospitals selected to participate in a 2006 programme to screen for ... cancer (5) |
| JOININ | Legless man, one goes into pub to participate (4,2) |
| RECUSED | About 100 employed declared themselves unable to participate due to conflict of interest (7) |
