诀别
jué bié · HSK 7
to part
👋💔 诀 final-parting + 别 separate = a goodbye said when you don't expect to meet again
别 means to part or separate; 诀 marks it as final. Together they name the heavy farewell, not a casual see-you-later. The 讠 (speech) radical in 诀 hints at words spoken at a last leave-taking.
别 — separate (knife 刂 + 另 phonetic/'other')
别 originally depicted using a knife (刂) to separate flesh from bone, giving the core sense of 'divide' or 'part from'. The left component 另 ('another, other') reinforces the idea of setting things apart and also hints at the sound. From 'separate' the meaning naturally extended to 'other, different' and to the adverb 'don't' (i.e. do otherwise).