lucy in sky with diamond (noun) acid: lysergic acid diethylamide, LSD
Sinonime: affirmed,
approved, ascertained,
assured, attested, bonded, certified,
confirmed, endorsed, for a fact, for sure, have a lock on, insured, on ice, pledged, plighted,
protected, sealed, secured,
sure, sure enough, sure-fire, warranted
Antonime: indefinite,
insecure, uncertain,
unsure