The term 50/50 is a phrase used to describe a situation where two parties have an equal share or stake IN something. The crossword solutions for this term are ONE (3 letters), EVEN (4 letters), and INHALF (6 letters). ONE refers to the number of parties involved, while EVEN implies that each party has an equal share. INHALF is a combination of the words 'IN' and 'HALF', which further emphasizes the idea of two parties having an equal share.