earnestly; intently; determinedly
Archaic adverb expressing strong determination or earnestness. Not used in modern Japanese; encountered only in classical texts.
In classical texts, ひらさら is sometimes used to mean 'earnestly' or 'single-mindedly'.
the heck; in the world; on earth
Archaic emphatic interrogative, similar to 一体全体. Used in old expressions like 何ひらさら (what the heck). Not productive in modern Japanese.
See also: 一体全体 (いったいぜんたい)
In old language, it was used to strengthen questions, as in 何ひらさら (what on earth).