Incorrect spelling, explanation: most of the negative forms in English, when in full forms, are written separately. The same happens with don’t, which as a full form is spelled as do not. Some English users get confused about that and they often join the full form, which gives an incorrect form donot. The only possible options are don’t and do not.

Correct spelling, explanation: do not is a negative form of an auxiliary verb, which is used in the Present Simple tense in the first and second person singular and in the plural. Do not is a full form, used mainly in formal language while the shortened form – don’t – is used much more frequently in informal and everyday language. The form do not could already be found in Old English.

Definition of do not:
1. auxiliary verb (negative) – the full form of don’t,
They do not like each other, but as they work together, they at least need to tolerate one another.

Expressions with do not:
A few popular expressions with do not are: do not disturb, do not swallow, and do not enter.
The patient is being operated on – do not disturb.
It is a dangerous substance only for external use – do not swallow.
It is a private area so do not enter.

Correct spelling

Incorrect spelling

Incorrect spelling