Cluttered rhymes with:
uncluttered, fluttered, uncluttered, buttered, fluttered, guttered, muttered, shuttered, sputtered, uncluttered, uttered
Cluttered sounds like:
calderwood, coulthard, cultured
uncluttered, fluttered, uncluttered, buttered, fluttered, guttered, muttered, shuttered, sputtered, uncluttered, uttered
calderwood, coulthard, cultured