endeavour

[1]	try , attempt , strive , make an effort , do one's best , struggle , exert oneself , undertake , aim , aspire , (Colloq) take a stab at , have a go/crack/whack/shot at
[2]	endeavor , strive

[1]	enterprise , endeavor
[2]	attempt , effort , pains , effort , endeavor , attempt , try , try , striving , struggle , venture , enterprise , (Colloq) stab , crack , whack , shot