if you say something is the exception that proves the rule, you mean that although it does not support the statement you have made, the statement is usually true.

This woman is the exception that proves the rule that it is impossible to be a warmonger and a feminist at the same time.

• in the fast lane
• in the final analysis
• in the first place
• in the flesh
• in the fullness of time
• in the grand scheme of things
• in the great scheme of things
• in the grip of
• in the grip of something
• in the groove
• in the hands of
• in the hands of someone
• in the heat of
• in the heat of something
• in the heat of the moment
• in the hole
• in the hot seat
• in the house
• in the interim
• in their infinite wisdom
• in their wisdom
• in the know
• in the lap of luxury
• in the light of
• in the light of something