"Go."
The understood subject is "You". "
[You] go" makes sense to me.
english.stackexchange.com/users/101/Michael Crenshaw
One could argue that in certain contexts, the single letter "I" is a sentence (depending on your definition of a sentence):
"Who is it?"
"I" This (one letter) is the shortest possible, unless you count the "empty utterance".
;-)
english.stackexchange.com/users/77/ShreevatsaR
It is said both the longest and the shortest sentence comes from the wedding ceremony: I do.
english.stackexchange.com/users/None/
"Be!"
The verb "to be" in the imperative mood.
Though it's the same number of letters as "Go!
", I'd say it wins as it comes first alphabetically. ;)
english.stackexchange.com/users/89/Charlie
"No!" works perfectly, in my opinion.
english.stackexchange.com/users/23/kitukwfyer
This.
That is the shortest, in number of words, complete English sentence that directly answers your question.
english.stackexchange.com/users/2614/RedGrittyBrick
I don't know if it even qualifies in this context, but according to the story, an author (variously Oscar Wilde or Victor Hugo), wondering how his new book was selling, sent a single-character telegram to his publisher: ?
The reply was !
that is, well .
english.stackexchange.com/users/9299/pavium
The shortest sentence in the entire English Language, is the reply: I.
It is a reply to the question: "Who is it?"
Reply: "
I." That's shorter than "Go!"
english.stackexchange.com/users/8183/Thursagen
I would vote for "I am."
english.stackexchange.com/users/30/Edward Tanguay
"I sentence you to time already served.
You are free to go."
english.stackexchange.com/users/89306/chiastic-security
?
Even better than that, contemplate (the pithy, wholly implied) section 7.1 of Wittgenstein's Tractatus Logico-Philosophicus (as translated from the original German):
english.stackexchange.com/users/2527/whuber
"O!"
As a variant of the exclamation "Oh!", an interjection of fear, surprise, admiration, etc.
english.stackexchange.com/users/9001/Hugo
It obviously can't be less than three letters (
**.) and still be a complete thought.
Go.
Hi!
Ho!
(same as "Hi")
This doesn't include responses since they require other sentences.
english.stackexchange.com/users/62/Arlen Beiler
Since you already have many sweet, and short, answers I can only speculate on your intentions and provide, possibly, interesting link to one word sentences .
english.stackexchange.com/users/8377/Unreason
No.
Also Q: Which is the fifth letter of the alphabet?A: E.
english.stackexchange.com/users/45/Midhat
Eh? Used to represent a sound made in speech, especially one used to express enquiry, surprise, or to elicit agreement [ODO]
english.stackexchange.com/users/20739/Ste
It depends on how you define sentence and then how you define shortest .
The answer does not appear to be Go , though (although that's quite a good shot at an answer).
The question uses the phrase complete sentence from which we can probably assume that the Original Poster is referring to a fully grammatical utterance headed by a finite verb.
With regards to shortest , there are at least two ways we could measure this.
We could do it orthographically, in which case the sentence with the fewest letters would probably be the imperative of the verb
' X ' (pronounced /eks/).
Although usually used transitively, as in the Mark Twain quote: 'I shell have to x this ere paragrab,' said he to himself, as he read it over.' ...
it could easily be used intransitively too: A.
What shall I do now?
B. X!
[meaning "start crossing out"]
However, although 'X' contains only one orthographic symbol, in terms of sound it consists of three segments: /eks/.
So, if by shortest sentence, we mean shortest in terms of segments, then this word wouldn't do.
The sentence Go has one consonant sound plus a diphthong - /gəʊ/ in Southern standard British English and /goʊ/
in General American.
We could regard this as having either two or three segments.
However, it is plainly obvious that this could be shorter.
The reason is we also have a verb owe which has exactly the same sound without the /g/, namely /əʊ/
or /oʊ/.
However, it is quite hard to use this verb without a following complement, and so an imperative sentence might be a bit implausible:
Owe! .
A better contender in terms of segments might be the verb OOH meaning to make an ooh sound, as in the audience oohed and aahed .
So if you were in the audience at one of those sitcoms where the audience were directed to laugh, clap, ooh and aah, one of the directions you might get, could feasibly be the imperative: Ooh!
This fully complete one word sentence consists only of the one vowel.
In phonemic script it looks like this: /u:/.
This then might be a contender for the shortest sentence in English.
But of course there are others.
For example there is always: Aah! ... which looks like this: /a:/!
english.stackexchange.com/users/76472/Araucaria - Not here any more.
What is the shortest comprehensive sentence in English?
Shortest comprehensive sentence in English
english.stackexchange.com
<sentence><is-it-a-sentence>
english.stackexchange.com/questions/258
english.stackexchange.com/users/40/chanchal1987
The answer to this question will depend on what definition you use for a sentence, but some possible contenders for shortest comprehensive sentence could be "Go.", "No." or "This.". Views vary but probably the shortest is the letter 'I' spoken in response to a question like 'Who is there?'
The answer to this question will depend on what definition you use for a sentence, but some possible contenders for shortest comprehensive sentence could be "Go.", "No." or "This.". Go.', 'You.', 'Be.' 'No,' are all suggestions, as well as the single letter 'I.' or 'I am.'. Or it is said both the longest and the shortest sentence comes from the wedding ceremony:  I do. It would however, depend on how you define sentence  and then how you define  shortest .
Suggested answers for the shortest sentence include: "No"; "Go"; "Hi"; "Oh"; and "This". Two-word sentences include "I do" or "I am". The answer to this question will depend on your definition of a sentence. However, there are a number of one-, two- or three- letter words that could function as complete sentences in their own right.
Go' Be!' No' This. I. I am' ?' O!' No. Eh? Depends on how you define it. Possible a sound such as 'ooh' or 'aah'.
Go.', 'You.', 'Be.' 'No,' are all suggestions, as well as the single letter 'I.' or 'I am.'. It is said both the longest and the shortest sentence comes from the wedding ceremony:  I do. It would however, depend on how you define sentence  and then how you define  shortest .
There are a range of one-, two- and three- letter words that could possibly function as whole sentences, such as "I", "Go" or "Hi". The answer to this question will depend on how you define a sentence.