unspoken (adj.)

1.indicated by necessary connotation though not expressed directly"gave silent consent" "a tacit agreement" "the understood provisos of a custody agreement"

2.expressed without speech; especially because words would be inappropriate or inadequate"a mute appeal" "a silent curse" "best grief is tongueless (Emily Dickinson)" "the words stopped at her lips unsounded" "unspoken grief" "choking exasperation and wordless shame (Thomas Wolfe)"

3.not made explicit"the unexpressed terms of the agreement" "things left unsaid" "some kind of unspoken agreement" "his action is clear but his reason remains unstated"