not complicated; easy to understand or do
a simple solution
The answer is really quite simple.
This machine is very simple to use.
We lost because we played badly. It's as simple as that .
Give the necessary information but keep it simple .
basic or plain without anything extra or unnecessary
simple but elegant clothes
We had a simple meal of soup and bread.
The accommodation is simple but spacious.
used before a noun to emphasize that it is exactly that and nothing else
Nobody wanted to believe the simple truth.
It was a matter of simple survival.
It's nothing to worry about─just a simple headache.
I had to do it for the simple reason that (= because) I couldn't trust anyone else.
with few parts
consisting of only a few parts; not complicated in structure
simple forms of life, for example amoebas
a simple machine
a simple sentence (= one with only one verb)
of a person
ordinary; not special
I'm a simple country girl.
of a person
not very intelligent; not mentally normal
He's not mad─just a little simple.
used to describe the present or past tense of a verb that is formed without using an auxiliary verb, as in She loves him (= the simple present tense) or He arrived late (= the simple past tense)
used after the noun that it refers to in order to emphasize that there is nothing but the thing you have just mentioned involved in sth
It's laziness, pure and simple.
These words all describe statements, often about sth unpleasant, that are very clear, not trying to hide anything, and not using more words than necessary.
used for talking about a fact that other people may not like to hear; honest and direct in a way that other people may not like
The plain fact is that nobody really knows.
[only before noun] used for talking about a fact that other people may not like to hear; very obvious and not complicated by anything else
The simple truth is that we just can't afford it.
plain or simple?
用以强调他人可能不乐意听的事实时，plain通常用于the plain fact/truth is that ...短语中。simple也可用这种表达方式，但是还可用于更宽泛的句型结构，与更多的词语（如reason和matter）搭配：
When it is being used to emphasize facts that other people may not like to hear, plain usually occurs in the expression the plain fact/truth is that… Simple can be used in this way too, but it can also be used in a wider variety of structures and collocations (such as reason and matter ).
The problem was due to the simple fact that…
Expressions with simple often suggest impatience with other people's behaviour.
( rather formal ) used for describing an unpleasant fact or difference that is very obvious
The stark truth is that there is not enough money left.
simple/plain truth指所谈的事尽管不中听，但听了可能会有好处。stark truth指所谈之事特别令人不快，而且没有任何好处。
The simple/plain truth may be sth that some people do not want to hear, but it may be good for them to hear it anyway. The stark truth is sth particularly unpleasant and has no good side to it at all.
[only before noun] the most basic or simple, with nothing extra
She gave me only the bare facts of the case.
( formal ) expressing your opinion or intention very clearly and firmly
The reply was an unequivocal ‘no’.
used for telling sb a rather unpleasant fact; without any extra explanation or detail to help you accept what is being said
The letter was a bald statement of our legal position.
bald fact通常比plain/simple fact更令人不快，但不快的程度轻于stark fact。
A bald fact is usually more unpleasant than a plain/simple fact , but not as unpleasant as a stark fact .
a person lacking intelligence or common sense
any herbaceous plant having medicinal properties
easy and not involved or complicated
- an elementary problem in statistics
- elementary, my dear Watson
- a simple game
- found an uncomplicated solution to the problem
- a simple country schoolhouse
- her black dress--simple to austerity
lacking mental capacity and subtlety
(botany) of leaf shapes;of leaves having no divisions or subdivisions
having few parts;not complex or complicated or involved
- a simple problem
- simple mechanisms
- a simple design
- a simple substance
exhibiting childlike simplicity and credulity
- childlike trust
- dewy-eyed innocence
- listened in round-eyed wonder