Definition of over-thoughtful in US English:

over-thoughtful

adjective

  • Excessively or unduly thoughtful.

Origin

Late Middle English; earliest use found in Reginald Pecock (c1392–?1459), bishop of Chichester and religious author. From over- + thoughtful.

Pronunciation

over-thoughtful

/ˌəʊvəˈθɔːtf(ʊ)l/