equivocal

equivocal     [ih-Kwiv-uh-kuh l] 

adjective.  ambiguous; uncertain 

"Are first born children more intelligent? Many studies have explored these ideas, but their findings have been equivocal—some supporting and some rejecting them."

"Pentagon spokesman was equivocal, emphasizing that Wheeler's activities were not indicative of the U.S. taking on a combat stance in Iraq."

"Apple has named its new stylus for iPad a Pencil. The reaction has been equivocal, as it neither derides nor entirely welcomes the Apple Pencil."

equivocal:  uncertain 

unequivocal:   certain