The exact opposite.
The friendly welcome was a 180 from what she had been expecting
A complete change of direction or opinion.
An instance of spinning 180 degrees, so that one is facing in the opposite direction.
The opposite or reverse.
Free verbal interchange of thoughts or views; conversation; chat.
One of a pair of terms that name or describe a relationship from opposite perspectives; converse antonym; relational antonym.
Of a proposition or theorem of the form: given that "If A is true, then B is true", then "If B is true, then A is true.".
opposite; reversed in order or relation; reciprocal
To keep company; to hold intimate intercourse; to commune.
To talk; to engage in conversation.