AnalyzerSentence analysis4SpansSentence歯がぐらぐらする。1000 character limitAnalyzeSentence歯はがぐらぐらする。Span Details歯はtooth; teeth; tooth (of a comb, saw, etc.); cog; support (of a geta)nounがsubject markergrammarぐらぐらwobbling; shaking; unsteady; wavering; dithering; indecisive; boiling up; bubbling vigorously; dizzily; giddily-> グラグラadverb, no-adjectiveする。light/support verb with a noun or noun-like phrasegrammar