Definition of overexpress in English:

overexpress

Pronunciation /ˌəʊv(ə)rɪkˈsprɛs/ /ˌəʊv(ə)rɛkˈsprɛs/

verb

  • 1To express (feelings, an opinion, etc.) to an excessive extent or in an exaggerated manner.

  • 2Genetics
    To synthesize the product of (a gene) in abnormally large amounts; to produce abnormally large amounts of (a gene product).

Origin

Late 19th century; earliest use found in Littell's Living Age. From over- + express.