御休みなさい[oyasuminasai] good night
ひと休み[hitoyasumi] rest
運休[unkyuu] service suspended (e.g. trains)
夏季休暇[kakikyuuka] summer vacation
夏休み[natsuyasumi] summer vacation

閑話休題[kanwakyuudai] Now let's return to the main subject
休め[yasume] (Stand) at ease!
気休め[kiyasume] mere consolation
気休めに[kiyasumeni] for peace of mind
休する[kyuusuru] to come to an end

偸閑[akarasama] plain
等閑[naozari] neglect
安閑[ankan] easygoingness
一閑張り[ikkanbari] lacquered papier-mache
閑人[kanjin] man of leisure

閑暇[kanka] leisure
閑居[kankyo] quiet and secluded life
閑散[kansan] deserted (esp. store, market, town, streets)
閑寂[kanjaku] quiet
閑職[kanshoku] leisurely post