但
dàn · HSK 2
but
亻+ 旦 = person + dawn; 旦 (dàn) gives the sound
但 decomposes into 亻(person radical) and 旦 (dàn, dawn — sun 日 over horizon 一). The 旦 component carries the pronunciation dàn. Meaning shifted from an old sense of 'only' to the modern conjunction 'but, yet'.
但 — person radical 亻 + dawn 旦
A semantic-phonetic compound: 亻 (person) gives the meaning side and 旦 (dawn) supplies the sound. Originally it depicted a person baring the shoulder, an old sense preserved in 袒. Over time 但 was borrowed to write the function word meaning 'only' and later 'but'.