How to say "Single" in Japanese

When translating "single" into Japanese, you must choose carefully between 一筋 and 頓服. In Japanese, 一筋 (ひとすじ (hitosuji)) is typically associated with "(1) single line/thread; (2) earnestly; wholeheartedly; single-mindedly" (Syllabus Level: N2) and represents When used as 一筋に or 一筋の, it often implies dedication to one thing or a straightforward path/way.. On the other hand, 頓服 (とんぷく (tonpuku)) maps to "single dose (of medicine), medication taken as needed" (Syllabus Level: N1) and represents Refers to a single dose of medicine taken on an as-needed basis, typically for immediate relief of symptoms like pain or fever, rather than regularly scheduled medication. Often used in medical contexts.. A literal translation of "single" can often sound unnatural to native Japanese speakers if mixed up!