| Rating | Solver | Clue |
|---|---|---|
| ANNUAL | Occurring once every year | |
| YEARLY | Occurring once every year | |
| TRIHORAL | Occurring once in every three hours. | |
| CENTENARY | Occurring once in every hundred years; centennial. | |
| BIWEEKLY | Occurring or appearing once every two weeks; fortnightly. | |
| UNDECENNARY | Occurring once in every period of eleven years; undecennial. | |
| ENNEATICAL | Occurring once in every nine times, days, years, etc.; every ninth. | |
| TRICENNIAL | Of or pertaining to thirty years; consisting of thirty years; occurring once in every thirty years. | |
| QUADRENNIAL | Occurring once in four years, or at the end of every four years; as, quadrennial games. | |
| TRIMESTRIAL | Of or pertaining to a trimester, or period of three months; occurring once in every three months; quarterly. | |
| QUINQUENNIAL | Occurring once in five years, or at the end of every five years; also, lasting five years. A quinquennial event. | |
| UNDECENNIAL | Occurring or observed every eleventh year; belonging to, or continuing, a period of eleven years; undecennary; as, an undecennial festival. | |