consonantal

from WordNet (r) 3.0 (2006)

consonantal
    adj 1: being or marked by or containing or functioning as a
           consonant; "consonantal sounds"; "a consonantal Hebrew
           text"; "consonantal alliteration"; "a consonantal
           cluster" [ant: {vocalic}]
    2: relating to or having the nature of a consonant

from The Collaborative International Dictionary of English v.0.48

Consonantal \Con`so*nan"tal\, a.
   Of the nature of a consonant; pertaining to consonants.
   [1913 Webster]