What rhymes with attention - 2 syllable
 gentian
 henschen
 mention
 pension
 tension

What rhymes with attention - 3 syllable
 ascension
 attention
 contention
 convention
 detention
 dimension
 dissension
 extension
 invention
 laurentian
 pretension
 prevention
 retention
 suspension

What rhymes with attention - 4 syllable
 apprehension
 comprehension
 condescension
 hypertension
 hypotension
 reinvention

What rhymes with attention - 5 syllable
 misapprehension