Meaning of JOINTLY in English
[adverb] [not gradable]Nelson Mandela and President De Klerk were jointly awarded the Nobel Prize for Peace in 1993.The Middle East peace conference will be hosted jointly by the United States and Russia.The Channel Tunnel was (UK) jointly funded/(ANZ) joint-funded by the French and the British.
Cambridge English vocab. Кембриджский английский словарь. 2012