suffix
Suffix attached to nouns to express that the amount is sufficient or excessive. Often used in negative or critical contexts. Compare with たくさん, which is a standalone adverb/noun.
See also: 沢山 (たくさん)
もう十分だ。これ以上は心配だくさんだ。
That's enough. Any more is too much worry.
彼の話は自慢だくさんで聞き飽きた。
His stories are full of boasting; I'm tired of listening.