To disclose or indicate, for example something which prudence would conceal; to reveal unintentionally.
To violate the confidence of, by disclosing a secret, or that which one is bound in honor not to make known.
To prove faithless or treacherous to, as to a trust or one who trusts; to be false to; to deceive.
To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly.
To mislead; to expose to inconvenience not foreseen; to lead into error or sin.
To lead astray; to seduce (as under promise of marriage) and then abandon.
To reveal.
To undo a folding.
To release from a fold or pen.
To turn out; to happen; to develop.
To open (anything covered or closed); to lay open to view or contemplation; to bring out in all the details, or by successive development.
In functional programming, a kind of higher-order function that is the opposite of a fold.