| recognition(noun, support, hold, break, drop) |
| relay(supply, agent, replacement, alternative, alternate) |
| relevancy(readiness, suitability, consistency, qualification, appropriateness) |
| relief(noun, ease, reserve, replacement, alternative) |
| replacement(shift, substitute, alternative, alternate, backup) |
| representative(supply, agent, substitute, replacement, alternate) |
| reserve(replacement, alternative, alternate, backup, surrogate) |
| resources(noun, support, hold, break, drop) |
| return(noun, support, hold, break, drop) |
| right-minded |
| sanction(noun, support, hold, break, drop) |
| seasonableness(readiness, suitability, consistency, qualification, appropriateness) |
| seemliness(readiness, suitability, consistency, qualification, appropriateness) |
| serviceableness(noun, service, practicality, usefulness, helpfulness) |
| stand-in(substitute, replacement, alternative, alternate, backup) |
| standby(supply, agent, replacement, alternative, alternate) |
| starting(noun, support, hold, break, drop) |
| step |
| strategy |
| sub(substitute, replacement, alternative, alternate, backup) |