simple

Simple is defined as having only one or a few parts, easy to understand or not complicated.

(adjective)

The definition of a simple is an easily misled person or an ignorant person.

(noun)

An example of simple is someone who does not take precautions in dangerous situations.

See simple in Webster's New World College Dictionary

having or consisting of only one part, feature, substance, etc.; not compounded or complex; single
having few parts or features; not complicated or involved: a simple pattern
easy to do, solve, or understand, as a task, question, etc.
without additions or qualifications; mere; bare: the simple facts
1. not ornate; unembellished; unadorned: simple clothes
2. not luxurious or elegant; plain: simple tastes
pure; unadulterated
without guile or deceit; innocent; artless
1. without ostentation or affectation; natural
2. lacking sophistication; naive
of low rank or position; specif.,
1. humble; lowly
2. common; ordinary
lacking significance; unimportant
1. having or showing little sense or reasoning ability; easily misled or deceived; stupid or foolish
2. uneducated or ignorant
Bot.
1. consisting of one piece; whole
2. not branched
3. developing from a single pistil or carpel: a simple fruit
Chem.
1. elementary
2. unmixed
Law unconditional; absolute: in fee simple
Zool. not divided into or made up of parts; not compounded: a simple eye

Origin: OFr < L simplus < IE *sṃplos < bases *sem-, one + *-plo-, -fold: see double

noun

Related Forms:

See simple in American Heritage Dictionary 4

adjective sim·pler, sim·plest

Having or composed of only one thing, element, or part. See Synonyms at pure.
Not involved or complicated; easy: a simple task. See Synonyms at easy.
Being without additions or modifications; mere: a simple “yes” or “no.”
Having little or no ornamentation; not embellished or adorned: a simple dress.
Not elaborate, elegant, or luxurious. See Synonyms at plain.
Unassuming or unpretentious; not affected.
a. Having or manifesting little sense or intelligence.
b. Uneducated; ignorant.
c. Unworldly or unsophisticated. See Synonyms at naive.
Not guileful or deceitful; sincere.
Humble or lowly in condition or rank: a simple woodcutter.
Ordinary or common: a simple head cold.
a. Being a fundamental or rudimentary element; basic.
b. Not important or significant; trivial.
Biology Having no divisions or branches; not compound: a simple leaf; a simple eye or lens.
Music Being without figuration or elaboration: a simple tone.