冷や・冷|ひやhiya[1]atamadaka (head-high)

1. nouncold water
2. nouncold sake
3. prefix, no-adjectivecold; cool; chilled; unheated

• Synonym冷たいつめたいNeutralThe everyday adjective for cold to the touch, also for coldness of manner; much wider in use than 「冷や」 and the default for general coldness.
• SynonymコールドNeutralLoanword meaning cold, used mostly in compounds such as 「コールドスプレー」.
• Related冷えひえNeutralChilliness or getting chilled, focusing on the body feeling cold, as in 「冷え性」; unlike 「冷や」 it never refers to cold water or sake.
• Related寒ささむさNeutralNoun for the coldness of low air temperature, the feeling winter brings; it does not refer to cold drinks like 「冷や」.
• Related低温ていおんWrittenWritten/formal term for low temperature, focusing on the measured value; common in technical and storage contexts, but it does not name a served drink as 「冷や」 does.
• Related寒気さむけNeutralA chill or shivers felt in the body, often when unwell; centers on that physical sensation of cold, not on cold water or sake.
• Related寒冷かんれいWrittenWritten/formal word for cold, mostly in 「寒冷地」, and focused on climate rather than drinks or served water.
• Related冷え冷えひえびえCasualColloquial term for an icy, bleak feel, focusing on cold air or a chilly atmosphere.
• Related冷寒れいかんWrittenWritten/formal but rare; synonymous with 「寒冷」 and seldom seen, so 「寒冷」 is the safer choice.
• Antonym熱ねつNeutralThe antonym in the hot–cold pairing, meaning heat or fever; but for hot water or warmed sake the actual opposites are 「湯」 and 「燗」.

Use 「お冷や」/「冷や」 for the cold water served at restaurants and for unheated, room-temperature sake; it also works as a prefix, as in 「冷や汗」. For general coldness, 「冷たい」 is the everyday choice. The opposites for hot water and hot sake are 「湯」 and 「燗」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 飲食店いんしょくてんなどで出だされる水みず。
2. 冷や水ひやみずの略称りゃくしょう。
3. 冷や酒ひやざけの略称りゃくしょう。
4. 名詞めいしの上うえについて複合語ふくごうごを作つくり、つめたい、あたためていない、冷ひやした状態じょうたいなどを表あらわす。