<oerjan> le/rn bimonthly//The word "bimonthly" has at least two meanings, although this wisdom only gives about half of one. No matter which expert you follow, you\'re 50% likely to misinterpret it, or doubly so, depending on the phase of the moon.

Ambiguous, from Greek 'ἀν-' lack of, and 'βιγός' clarity of meaning, means when something is unclear in its meaning. Antonym: biguous.