唾|つばtsuba[1]atamadaka (head-high)

1. nounsaliva; spit; spittle
   吐はいた唾つばは飲のめぬ。↗

   A word, once out, flies everywhere.

• Synonym唾液だえきWrittenWritten term for saliva used in medical contexts, as in 「唾液検査」; 「唾」 is the colloquial everyday word, as in 「唾を吐く」.
• Related津液しんえきFormalFormal term from Chinese medicine covering saliva and other bodily fluids such as tears; rare in modern usage.

For everyday saliva or spit use 「唾」, as in 「唾を吐く」 and 「眉に唾をつける」. In medical contexts say 「唾液」; 「津液」 is the formal Chinese-medicine term for saliva and similar bodily fluids.

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

1. （つば・つばき）口内こうないで食物しょくもつを嚥下えんげしやすくしたり、消化しょうかの一部いちぶを促進そくしんするため、口内こうないに分泌ぶんぴつされる体液たいえき。