Assonant \As"so*nant\, a. [L. assonans, p. pr. of assonare to sound to, to correspond to in sound; ad + sonare to sound, sonus sound: cf. F. assonant. See Sound.]

1. Having a resemblance of sounds. [1913 Webster]

2. (Pros.) Pertaining to the peculiar species of rhyme called assonance; not consonant. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

48 Moby Thesaurus words for "assonant": accordant, according, alliteral, alliterating, alliterative, assonantal, attuned, belabored, blended, blending, chanting, chiming, cliche-ridden, concordant, consonant, dingdong, harmonic, harmonious, harmonizing, harping, homophonic, humdrum, in accord, in chorus, in concert, in concord, in sync, in tune, in unison, jingle-jangle, jingling, jog-trot, labored, monodic, monophonic, monotone, monotonous, punning, rhymed, rhyming, singsong, symphonious, synchronized, synchronous, tedious, tuned, unisonant, unisonous

Source: Moby Thesaurus II by Grady Ward, 1.0
 

assonant adj
1: having the same sound (especially the same vowel sound) occurring in successive stressed syllables; "note the assonant words and syllables in `tilting at windmills'"
2: having the same vowel sound occurring with different consonants in successive words or stressed syllables

Source: WordNet (r) 2.0
 

Assonant \As"so*nant\, a. [L. assonans, p. pr. of assonare to sound to, to correspond to in sound; ad + sonare to sound, sonus sound: cf. F. assonant. See Sound.]

1. Having a resemblance of sounds.

2. (Pros.) Pertaining to the peculiar species of rhyme called assonance; not consonant.

Source: Webster's Revised Unabridged Dictionary (1913)