What rhymes with adventure - 2 syllable
 bencher
 clencher
 denture
 mencher
 quencher
 rencher
 trencher
 venture

What rhymes with adventure - 3 syllable
 debenture
 indenture
 laventure

What rhymes with adventure - 4 syllable
 misadventure

What rhymes with adventure - 5 syllable
 eurodebenture