夏衣[natsugoromo] summer clothes
夏羽織[natsubaori] summer haori (coat)
夏越し[natsugoshi] keeping over the summer
夏掛け[natsugake] summer-use futon
夏期学校[kakigakkou] summer school

夏期時間[kakijikan] daylight-saving time
夏期大学[kakidaigaku] university summer school
夏季休暇[kakikyuuka] summer vacation
夏菊[natsugiku] early chrysanthemums

御手盛り[otemori] making arbitrary decisions which benefit oneself
いたずら盛り[itazurazakari] mischievous age
人生の真っ盛り[isshounomassakari] the noontide of life
一盛り[hitosakari] temporary prosperity
一盛り[hitomori] pile

栄枯盛衰[eikoseisui] ups and downs of life
旺盛[ousei] full of vim and vigor
花盛り[hanazakari] flowers in full bloom
勤め盛り[tsutomezakari] the prime of one's career
最盛期[saiseiki] golden age