sayonara
UK[ˌsaɪəˈnɑːrə]US[ˌsaɪəˈnɑːrə]
interj
a word used to say goodbye, especially in japan.
n
a farewell.
Etymology
sayonara is a direct borrowing from japanese, where it functions as a formal or polite term for farewell. the word is composed of the elements 'sayō' (meaning 'if it is so' or 'in that case') and 'nara' (the conditional form of the copula 'da'), giving it an underlying sense of 'if that is the case (we must part)'. entering english in the late 19th century, it was initially used to evoke a japanese context but has since become a widely recognized, albeit somewhat literary, synonym for a final or poignant goodbye, carrying connotations of a permanent or long-term parting.
Analysis
this is a direct loanword from japanese. it is not segmented into english morphemes.
Examples
with a final wave, she whispered "sayonara" and boarded the plane.
the film ended on a melancholic note, a quiet sayonara to its protagonist's youth.
he didn't realize their brief meeting would be their last sayonara.