忍しのび声ごえMeaningsNoun1. whisperingKanji used忍ninja声voicePitch accentしのびごえComposed of忍しのびstealth; travelling incognito (traveling); ninjutsu; ninja; sneak theft; sneak thief; toleranceNoun声こえvoice; singing (of a bird); chirping (of an insect); hoot; opinion (as expressed in words); view; wish; attitude; will; sound; …Noun