ソーダ水(すい)

Carbonated water, either plain or used as a mixer. Composed of ソーダ (soda, from English) + 水(すい) (water). In Japan, ソーダ水(すい) specifically refers to plain carbonated water without added sweeteners, distinguishing it from flavored sodas.

Common collocations

• ソーダ水(すい)で割(わ)る — to dilute/mix with soda water
• ハイボール — highball (whisky + soda water, extremely popular in Japan)
• 焼酎(しょうちゅう)のソーダ割(わ)り — shochu mixed with soda water
• レモンソーダ水(すい) — lemon soda water

Similar words

• 炭酸水(たんさんすい) — carbonated water (the more common everyday term)
• 炭酸(たんさん)飲料(いんりょう) — carbonated beverage (broader category including cola, etc.)
• サイダー — cider (in Japan, means lemon-lime soda, not apple cider)
• ラムネ — ramune (traditional Japanese marble-sealed soda)