equivocal

Concise Oxford English Dictionary © 2008 Oxford University Press:
equivocal /ɪˈkwɪvək(ə)l/

▶adjective open to more than one interpretation; ambiguous.

■ questionable or uncertain: the results of the analysis were equivocal.

– derivatives
equivocality noun,
equivocally adverb,
equivocalness noun.

– origin C16: from late L. aequivocus, from L. aequus ‘equally’ + vocare ‘to call’.