Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Noun
inverted; upside down; reversed; back to front
Abbreviationsee 逆さま
その晩私はテーブルの上で逆さにしたコーヒーカップの下にチップを置いて出た。That evening I left my tip under a coffee cup, which I left upside down on the table.
Also written 倒さ【さかさ】