easy to understand, deal with, use, etc.

a simple matter; simple tools.

not elaborate or artificial; plain

a simple style.

not ornate or luxurious; unadorned

a simple gown.

unaffected; unassuming; modest

a simple manner.

not complicated

a simple design.

not complex or compound; single.

occurring or considered alone; mere; bare

the simple truth; a simple fact.

free of deceit or guile; sincere; unconditional

a frank, simple answer.

common or ordinary

a simple soldier.

not grand or sophisticated; unpretentious

a simple way of life.

humble or lowly

simple folk.

inconsequential or rudimentary.

unlearned; ignorant.

lacking mental acuteness or sense

a simple way of thinking.

unsophisticated; naive; credulous.

simpleminded.

Chemistry .

composed of only one substance or element

a simple substance.

not mixed.

Botany . not divided into parts

a simple leaf; a simple stem.

Zoology . not compound

a simple ascidian.

Music . uncompounded or without overtones; single

simple tone.

Grammar . having only the head without modifying elements included

The simple subject of The dappled pony gazed over the fence is pony. Compare complete def. 5

(of a verb tense) consisting of a main verb with no auxiliaries, as takes (simple present) or stood (simple past) ( opposed to compound ).

Mathematics . linear ( def. 7 ) .

Optics . (of a lens) having two optical surfaces only.

an ignorant, foolish, or gullible person.

something simple, unmixed, or uncompounded.

simples, Textiles . cords for controlling the warp threads in forming the shed on draw-looms.

a person of humble origins; commoner.

an herb or other plant used for medicinal purposes

country simples.

adjective

complex , complicated , convoluted , difficult , exacting , intricate , unclear , unintelligible , cluttered , decorated , embellished , jumbled , ornate , mature , older , sophisticated , aware , intelligent , on-the-ball , smart , artful , crafty , elaborate

adjective

child’s play , cinch * , clean , easy as pie * , effortless , elementary , facile , incomplex , intelligible , light , lucid , manageable , mild , no problem , no sweat , not difficult , picnic * , piece of cake * , plain , quiet , self-explanatory , simple as abc , smooth , snap * , straightforward , transparent , uncomplicated , uninvolved , unmistakable , untroublesome , walkovernotes:simple means \'plain , uncomplicated\'; simplistic means \'characterized by a forced , unwarranted simplicity\' , absolute , austere , classic , discreet , folksy , homely , homey , humble , inelaborate , lowly , mere , modest , not complex , open and shut , pure , pure and simple , rustic , sheer , single , spartan , unadorned , unadulterated , unaffected , unalloyed , unblended , uncombined , uncompounded , undecorated , unelaborate , unembellished , unfussy , unmitigated , unmixed , unornamented , unostentatious , unpretentious , unqualified , vanilla *notes:simple means \'plain , amateur , artless , bald , basic , childish , direct , frank , green , guileless , honest , ingenuous , naive , naked , natural , sincere , square , stark , trusting , unartificial , undeniable , unexperienced , unschooled , unsophisticated , unstudied , unvarnishednotes:simple means \'plain , asinine , backward , brainless , credulous , dense , dimwitted , dull , dumb , fat , feeble , foolish , green * , gullible , half-witted , idiotic , ignorant , illiterate , imbecile , inane , inexperienced , inexpert , insensate , mindless , moronic , nitwitted , obtuse , senseless , shallow , silly , simple-minded , slow , soft , soft-headed , stupid , thick , uneducated , unintelligent , witlessnotes:simple means \'plain , perfect , undiluted , dry , unvarnished , unassuming , slow-witted , innocent , unworldly , mean , accessible , au naturel , bare , bucolic , candid , childlike , cinch , clinical , common , conventionalized , easy , elemental , endless , fatuous , genuine , homemade , homespun , idyllic , limpid , nave , oafish , ordinary , pastoral , pellucid , perspicuous , primitive , real , rudimentary , simplified , translucent , trifling , uncluttered

noun

ass , idiot , imbecile , jackass , mooncalf , moron , nincompoop , ninny , nitwit , simpleton , softhead , tomfool