Synonyms for extensive research

Synonyms for extensive

wide (great, , >>)
broad
comprehensive
expansive (ample, copious, spacious >>)
extended
lengthy

See all synonyms for extensive

Synonyms for research

study (examination, scrutiny, disquisition >>)
investigation
exploration
investigate (search, explore, examine >>)
science
probe (testing, test, trial >>)

See all synonyms for research