WordNet sense 1 (having the indivisible character of a unit):

one

WordNet sense 2 (formed or united into a whole):

incorporated, integrated, unified

WordNet sense 3 (bound in close association):

conjunct

WordNet sense 4 (joined together especially in a pair or pairs):

conjugate, coupled, conjugate

WordNet sense 5 (joined together into a whole):

amalgamated, consolidated

WordNet sense 6 (united in a confederacy or league):

allied, confederate

WordNet sense 7 (united by being of the same opinion):

agreed

WordNet sense 8 (involving the joint activity of two or more):

combined, concerted, conjunctive, cooperative

WordNet sense 9 (of or relating to two people who are married to each other):

joined