| makeshift(adjective, free, informal, casual, spontaneous) |
| meretricious(adjective, fake, counterfeit, sham, phony) |
| mythologic(adjective, mythical) |
| off-the-cuff(adjective, informal, impulsive, unprepared, impromptu) |
| off the cuff(expression, free, informal, snap, unrehearsed) |
| off the top of head(expression, free, informal, snap, unrehearsed) |
| on-the-spot(free, informal, casual, impulsive, snap) |
| on impulse(expression, free, informal, casual, unrehearsed) |
| paved |
| phony(adjective, fake, false, unusual, strange) |
| prepared(adjective, mentally) |
| put-on(adjective, fake, false, unusual, strange) |
| put on |
| put up |
| queer(untrue, developed, fictitious, invented, fabricated) |
| snap(free, informal, casual, impulsive, unprepared) |
| spur-of-the-moment(adjective, free, informal, casual, spontaneous) |
| supposed(fantastic, unreal, theoretical, fictitious, speculative) |
| suppositious(untrue, developed, fictitious, invented, fabricated) |
| supposititious(fantastic, untrue, unreal, fabulous, theoretical) |