simple
adjective(sim-ple)
apart from anything else; without additions or modifications
Examples:
The simple passage of time was enough. 
The simple truth. 
simple
adjective(sim-ple)
exhibiting childlike simplicity and credulity
Synonyms: childlike, dewy-eyed, round-eyed, wide-eyed, 
 simple
noun(sim-ple)
a person lacking intelligence or common sense
simple
adjective(sim-ple)
(botany) of leaf shapes; of leaves having no divisions or subdivisions
simple
adjective(sim-ple)
easy and not involved or complicated
Examples:
A simple game. 
simple
adjective(sim-ple)
lacking mental capacity and subtlety
Synonyms: dim-witted, simple-minded, 
simple
noun(sim-ple)
any herbaceous plant having medicinal properties
simple
adjective(sim-ple)
having few parts; not complex or complicated or involved
Examples:
A simple problem. 
Simple mechanisms. 
A simple design. 
A simple substance. 
simple
adjective(sim-ple)
unornamented
Examples:
A simple country schoolhouse. 
Her black dress--simple to austerity.