A lot vs. Alot: 9 Grammatical Pitfalls
"first-rate, excellent," 1837, from prefix in superfine (1682), denoting "highest grade of goods," from Latin super "above, over, beyond" (see super-). Extended usage as a general term of approval is 1895 slang, revived 1960s. Rhyming reduplication form super-duper first attested 1940.
A law requiring that meetings of legislative bodies be opened to the public: After the sunshine law the city council had to open its doors (1972+)
One who likes to sit in the sun, esp to get a tan: turns sun-worshipper in April (1966+)
A superintendent, esp one who is custodian of an apartment building (1857+)