AnalyzerSentence analysis3SpansSentence知らん顔をする1000 character limitAnalyzeSentence知しらん顔かおをするSpan Details知しらん顔かおfeigned ignorance; pretending not to know; ignoring; unconcerned air; indifference; nonchalancenoun, suru verbをobject markergrammarするlight/support verb with a noun or noun-like phrasegrammar
