AnalyzerSentence analysis2SpansSentenceおやすみなさい、先生。1000 character limitAnalyzeSentenceおやすみなさい、先せん生せい。Span Detailsおやすみなさい、good night-> お休みなさいexpression先せん生せい。teacher; instructor; master; sensei; title of respect; (teasing) sir; (joking) master; one's eldernoun, noun suffix