出典:Wiktionary
出典:『Wiktionary』 (2026/01/28 15:36 UTC 版)
Apparently from English tiffing, present participle of tiff (“to take a small drink, to sip”) (slang).
tiffin (countable and uncountable, plural tiffins)
tiffin (third-person singular simple present tiffins, present participle tiffining, simple past and past participle tiffined)