Lucky = Mazeldik (מאַזלדיק)
Mazldik
Bling is not a Yiddish word or a Hebrew word.
Yiddish = Yiddish (ייִדיש)
Mazldik is the word for lucky when used on its own, and would be inflected to indicate its use as a feminine adjective as mazldike, masculine would be mazldiker. There are other forms for other grammatical cases.
The Yiddish word for darkness is "dunkel."
It is the Yiddish word for a woman who is not Jewish. It is slang in English, but it is not slang in Yiddish.
The Yiddish word for expert is "experte" (אַקספּערטע).
The Yiddish word for grandfather is "zeide" or "zayde."
One word for knickknacks in Yiddish is "tchotchkes".
The Yiddish word for disappointed is "Ahntoisht".
Spinoza is not a Yiddish word. It appears to be a Spanish name.
The Yiddish word for little girl is "meidele" (מיידעלע).