空そらで言いう

expression, godan verb (-u)

recite from memory; say by heart

Used when reciting something without looking at a text, such as a speech, poem, or lines. The phrase 空で is an adverbial form meaning 'by heart' or 'from memory'.

• 彼かれは長ながい詩しを空そらで言いえる。

  He can recite a long poem from memory.

• 台詞せりふを空そらで言いう練れん習しゅうをした。

  I practiced saying my lines by heart.