adverb
freely; generously; without holding back
Describes giving, spending, or using something without hesitation or stinginess. Often used with verbs like 与える, 使う, 注ぐ.
彼は惜しげなくお金を使う。
He spends money freely.
彼女は惜しげなく愛情を注いだ。
She poured out her affection generously.
Derived from 惜し (stem of 惜しむ, 'to begrudge') + げ (suffix indicating appearance or feeling) + なく (adverbial form of ない). Literally 'without a begrudging appearance'.