1. Manifesting or characterized by unusually early development or maturity, especially in mental aptitude. 2. Botany Blossoming before the appearance of leaves.
precious (definition 4 applies) adj.
1. Of high cost or worth; valuable. 2. Highly esteemed; cherished. 3. Dear; beloved. 4. Affectedly dainty or overrefined: precious mannerisms. 5. Informal Thoroughgoing; unmitigated: a precious mess.