"Loss of Dodge and Dexterity bonuses
Whenever a character is flat-footed, she loses any applicable dexterity and dodge bonuses. Characters which are stunned, asleep or paralysed, or else not actively engaged in combat are considered flat-footed. Some feats, such as Uncanny Dodge, will allow a character to retain dex bonuses to armor class if the character is caught flat-footed.
NOTE: Although being flanked will render a character vulnerable to sneak attacks just as being caught flat-footed will, a character who is the target of a sneak attack is not automatically flat-footed."
For NWN2 Flat footed is being caught off guard, its not entirely a separate condition from being Feinted or Sneaked. They have been caught off guard and are now susceptible to sneak attack damage, if you are flanked and fighting another then your flanks are off guard. However the AC losses may vary. Uncanny Dodge is also not some overpowered feat that helps against all means of being caught flat footed, its a defense against invisible attackers and the improved version helps against flank attacks. Spot and or Listen skills assist against being caught off guard by Feint and Stealth. Ragimund (talk) 11:40, April 9, 2019 (UTC)