Ornamental rhymes with:
detrimental, elemental, fundamental, incremental, instrumental, monumental, regimental, sentimental, supplemental, temperamental
Ornamental sounds like:
orenthal, oriental, ornamentally, ornately
detrimental, elemental, fundamental, incremental, instrumental, monumental, regimental, sentimental, supplemental, temperamental
orenthal, oriental, ornamentally, ornately