Synonyms for Reasoned (same or very similar meaning)
WordNet sense 1 (logically valid):
sound, well-groundedWordNet sense 2 (well grounded in logic or truth or having legal force):
validWordNet sense 3 (resulting from careful thought):
considered, well thought outWordNet sense 4 (exhibiting or characterized by careful thought):
thoughtfulFrom the ODE community, based on WordNetadd/edit