And... not (introducing a negative statement, without necessarily following one).
A function word introducing each except the first term of a series, indicating none of them is true.
Than.
Used to introduce a further negative statement.
And not.
Negates the meaning of the modified verb.
To no degree.
Used to indicate the opposite or near opposite, often in a form of understatement.
‘Do they know?’ ‘I believe not’ (formal)
Used to indicate that the previous phrase was meant sarcastically or ironically.