熱りが冷める

ほとぼりがさめる

The heat is off, The excitement dies down

冷熱

coldness and hotness; cooling and heating

冷める

さめる

to become cool (e.g. from a high temperature to room temperature), to come down (fever)

熱め

あつめ

hot

熱冷まし

ねつさまし

antifebrile, antipyretic

冷熱発電

れいねつはつでん

cold energy power generation (e.g. from LNG)

政冷経熱

せいれいけいねつ

cold political relations but hot economical relations (often said about China-Japan relations)

熱が入る

ねつがはいる

to become keen on, to get passionate about

ほとぼりが冷める

ほとぼりがさめる

the heat is off; things calm down; the excitement dies down

湯冷め

ゆざめ

feeling chilly after taking a bath

がめる

ガメる

to greedily try to win big (e.g. in mahjong)

冷え上がる

ひえあがる

to get completely chilled

新菱冷熱工業

しんりょうれいねつこうぎょう

Shinryo Corporation

胸が熱くなる

むねがあつくなる

to become fraught with emotion

冷える

ひえる

to grow cold (from room temperature, e.g. in refrigerator), to get chilly, to cool down

熱する

ねっする

to heat, to heat up

気がとがめる

きがとがめる

to feel guilty, to suffer from a guilty conscience, to feel uneasy, to have qualms about, to have scruples about, to feel regret

冷めやらぬ

さめやらぬ

lingering (usu. feeling, emotion, etc.), continuing (to), still (...)

目が覚める

めがさめる

to awaken, to perk up, to snap out (of something)