say it: uhn-KLUHT-urd
uncluttered is an adjective meaning "having nothing extraneous". It carries one recorded sense.
having nothing extraneous
“an uncluttered room”
“the unlittered shoulders of the road”
Definitions, synonyms and semantic relations for uncluttered come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.