modal
mod.al \'mo-d-*l\ \-*l-e-\ aj [ML modalis, fr. L modus] 1: of or relating to modality in logic 2: containing provisions as to the mode of procedure or the manner of taki ng effect - used of a contract or legacy 3: of or relating to a musical mode 4: of or relating to structure as opposed to substance 5: of, relating to, or constituting a grammatical form or category charact eristically indicating predication of an action or state in some manner other than as a simple fact 6: of or relating to a statistical mode - mod.al.ly av
Webster's English Dictionary