thoughtlessness; thoughtless person
Archaic noun for thoughtlessness or a thoughtless person. Not used in modern Japanese; encountered only in historical texts.
The word 頓的 appears in old documents, but it is not used at all today.
The historical derivation is uncertain; the kanji 頓 (sudden, dull) and 的 (target, -like) are conventionally associated with the meaning, but the exact origin is unclear.