| Joined into one |
UNITED |
| Least risky |
SAFEST |
| Likely to act without considering the consequences |
IMPULSIVE |
| Listlessness, lethargy |
LASSITUDE |
| More unsightly |
UGLIER |
| Period of celebration |
FESTIVAL |
| Prudence and temperance, say |
VIRTUES |
| Range of hills |
RIDGE |
| Repay a person who has spent or lost money |
REIMBURSE |
| Rough, bumpy |
UNEVEN |
| Russian mountain range |
URAL |
| Set down in permanent form |
RECORD |
| Shackleton or Amundsen, say |
EXPLORER |
| Store of historical artefacts |
MUSEUM |
| Symbol worn, to indicate membership perhaps |
BADGE |
| Tenders |
OFFERS |
| The game that determines the series winner |
DECIDER |
| They follow causes |
EFFECTS |