由衷
yoú zhōng · HSK 7
heartfelt
❤️ 由衷 = from (由) + inner heart (衷) — feelings that originate deep inside
由 means to originate or come from; 衷 is the innermost heart, built from 中 (center) tucked inside 衣 (clothing) — the core under your clothes. Together: words or thanks that come straight from the center of you, hence heartfelt and unfeigned.
由 — pictograph of a gourd or vessel with a stem
由 originated as a pictograph showing a gourd, fruit, or vessel with a sprout or stem emerging from the top. Over time the meaning shifted abstractly to 'come forth from' or 'origin', giving modern senses like 'reason', 'cause', and 'from'. It is unrelated to 田 despite the visual similarity.