adj.早熟的,
Merriam-Webster Online Dictionary
precocious (adjective)1.
exceptionally in development or occurrence - early precocious puberty
2.
exhibiting mature qualities at an unusually early age - a precocious child
Merriam-Webster Online Thesaurus
precocious (adjective)occurring before the usual or expected time
SYNONYMS:
inopportune, precocious, premature, unseasonable, untimelyRELATED WORDS:
unanticipated, unexpected, unforeseen, unlooked-for; abrupt, suddenNEAR ANTONYMS:
behindhand, belated, delinquent, latish, overdue, slow, tardy; anticipated, expected; delayed, detained, postponed