| unbidden(adjective, free, keen, happy, agreeable) |
| spontaneous(adjective, feature, characteristic, free, regard) |
| gratuitous(adjective, feature, characteristic, free, deliberate) |
| unsought(adjective, disagreeable, lousy, voluntary, unwelcome) |
| unsolicited(adjective, annoying, unwelcome, undesirable, unwanted) |
| voluntary(adjective, feature, characteristic, free, keen) |
| unforced(adjective, feature, characteristic, free, regard) |
| uninvited(adjective, disagreeable, lousy, voluntary, unwelcome) |
| unrequested(adjective, freely, voluntary, unsolicited, uninvited) |
| uncalled-for(adjective, spare, extreme, useless, extra) |
| unwanted(adjective, spare, disagreeable, lousy, voluntary) |
| unwelcome(adjective, disagreeable, lousy, annoying, voluntary) |
| free(adjective, feature, characteristic, deliberate, natural) |
| volunteer(adjective, feature, characteristic, free, regard) |
| wanton(adjective, cruel, malicious, gratuitous) |
| intended(adjective, feature, characteristic, free, regard) |
| intentional(adjective, feature, characteristic, free, regard) |
| unconstrained(adjective, feature, characteristic, free, regard) |
| undesired(adjective, disagreeable, lousy, voluntary, unwelcome) |
| unprompted(adjective, natural, spontaneous, freely, voluntary) |