AnalyzerSentence analysis4SpansSentence膝がグキグキする。1000 character limitAnalyzeSentence膝ひざがグキグキする。Span Details膝ひざknee; lap; knee and thigh (while sitting)nounがsubject markergrammarグキグキthrobbing pain; aching; jerkily; awkwardly; with a grinding motionadverbする。light/support verb with a noun or noun-like phrasegrammar