also: そっこん
madly in love; head over heels
Describes being deeply infatuated or completely charmed by someone. Often used in casual, emotional contexts.
He is head over heels for her.
There are many fans who are madly in love with that idol.
completely; from the heart
Adverbial use meaning 'wholeheartedly' or 'entirely'. Less common than the adjectival sense; often appears in set phrases like ぞっこんほれ込む.
I fell completely for his talent.
Obsolete kana form; not used in modern Japanese.
The origin is uncertain. It may be a sound-symbolic word (mimetic) emphasizing deep, wholehearted feeling, possibly related to ぞっこん (thoroughly) in dialects.