SynonymDefinitionAntonym.com - English Synonym Dictionary

A person lacking intelligence or common sense

Any herbaceous plant having medicinal properties

(botany) of leaf shapes; of leaves having no divisions or subdivisions

Having few parts; not complex or complicated or involved

Easy and not involved or complicated

Exhibiting childlike simplicity and credulity

Unornamented

Lacking mental capacity and subtlety

Apart from anything else; without additions or modifications