say it: JOYNT-lee
jointly is an adverb meaning "in collaboration or cooperation". It carries 2 recorded senses.
in collaboration or cooperation
“this paper was written jointly”
in conjunction with; combined
“our salaries put together couldn't pay for the damage”
“we couldn't pay for the damages with all our salaries put together”
Definitions, synonyms and semantic relations for jointly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.