Definition of: simple

(sim′pəl) adjective ·pler, ·plest
1. Consisting of one thing; single; uncombined; unmingled.
2. Not complex or complicated; easy.
3. Without embellishment; plain; unadorned.
4. Free from affectation; sincere; artless; unsophisticated; also, of humble rank or condition; lowly.
5. Of weak intellect; silly; feeble–minded.
6. Not worth much consideration; insignificant; trifling; ordinary.
7. Without luxury; frugal.
8. Having nothing added; mere: the simple truth.
9. Chem. That cannot be or has not been decomposed; elementary; also, unmixed.
10. Bot. Not subdivided: a simple leaf; entire; not divided.
11. Music a Single. b Without overtones. c Not developed or elaborated: simple harmony.
—noun
1. That which is simple; an unartificial, uncomplex, or natural thing; an element.
2. A medicinal plant, or the medicine extracted from it: from the former supposition that each single herb was or provided a specific for some disease.
3. A simpleton; a stupid or ignorant person; also, a person of humble position or birth.
4. Eccl. A feast of lowest rank which is merely commemorated at the canonical hours.
5. plural Colloq. Foolishness; insanity: He suffers from the simples. [<OF <L simplex, simplus] Synonyms (adj.): chaste, modest, natural, neat, plain, quiet, unadorned, unaffected, unembellished, unpretentious, unstudied, unvarnished. See CANDID, PURE. Antonyms: affected, artful, artificial, complex, complicated, elaborate, intricate, involved, ostentatious, pretentious, showy.