Literary or somewhat old-fashioned adverb meaning 'frequently' or 'often'. Commonly appears in the phrase 足しげく (あししげく) 'frequently visiting'. In modern Japanese, よく or 頻繁に are more common.
See also: 足繁く
He frequently visited the library.
They frequently exchanged letters.
Usually written in kana; the kanji form 繁く is rare.
Kanji form is rarely used; learners should prefer the kana spelling.
Derived from the classical Japanese adjective 繁し (しげし) meaning 'thick, dense, frequent', with the adverbial inflection く. The kanji 繁 carries meanings of 'luxuriant' or 'frequent'.