Stuff about ENTPs, other types (intuition doms) included for contrast and context:
ENTPs can admit that they are wrong, if they intuit that they are. They won't admit it just because in the context of a debate their argument doesn't measure up to the opponents logically, not so long as their Ne is still buzzing. Then, they will carry on the argument using insidious means if necessary, expecting to eventually trigger more intuitions with the help of which they expect to come out on top. If there is indeed such an intuition out there the ENTP will be more likely to spot it the longer the argument goes on; I think most of them know this on some level.
ENFPs are too sensitive to do this unless they are quite comfortable with the people in the context. Typically, they will either refrain from doing something so subversive or they take on the role of acting subversive themselves. Employing ridicule - functioning as an unconscious defense mechanism of sorts giving them temporary armor- when they actually have to do it. When they have to do it is typically when Fi has been violated. Tertiary Te emerges from its subconscious dwelling manifested in the form of anger. People are called stupid, useless, non-contributing, illogical: they don't get anything. If they finally get the intuition they needed they might calm down a bit, or if its gone too far at that point they will use it mercilessly. Though if things have gone too far Ne typically has trouble doing what it should; intuitions which would have come easy under harmonious circumstances may be eerily absent. If the ENFP hasn't spiced up the angry Te tirade by playing a victim already its time to do that and escape! Though to be fair the ENFP probably does genuinely feel like a victim even if they have themselves to blame. A downside of Fi.
If things progress further still the common inferior function of ENP's will start painting everything black. They will experience certainty and this time it will be from within; whatever the fight was about it will suddenly not really matter anymore, they will either perform a sudden retreat or if they can, tell the other person to get the fuck out. Then they will sit down and stare blankly ahead, bitterly stoic in the face of an essentially disappointing world, subjected by their Si to an extreme pacifying form of self-victimization. Such is also the case with the ENTP as far as I know.
But of course, Fi is more prone to being violated than is Ti. When someone says "look you fucking cockface your logic is shit because *reason which makes sense, indicating that the logic of the ENTP is not doing so good at the moment*" to an ENTP who still thinks he/she is right despite being in disadvantageous position (Ne says hi) said ENTP will not experience a violation of their Ti. Indeed, they will just carry on anyway.
If, however, the ENTP is rendered upset, then tertiary Fe (unless someone very close to them is the cause this only happens after prolonged attacks on the ENTP though) comes out. Typically comfortably sarcastic, not opposed to trading insults, (indeed: relaxed as if at home in an acidic milieu) the ENTPs mood changes drastically. His opponent had better watch out at that point, because the difference will be felt in the critical remarks of the ENTP--which are sure to follow suit. Matters of extroverted feeling having suddenly gained in terms of importance and relevance: the opponent will be depicted neglecting basic respect for human dignity, ruining the fun for everyone, violating basic rules of (not quite conduct but...) getting the fuck along. Insults attacking the logic of the opponent are still used; if the potential to cause damage with one is sensed by Fe the opportunity to do so will be seized. The nature of the logic will not be the same though, once detached, -free to go out on adventures with its best pal Ne who will take it to places- it now appears grounded and pragmatic, determined too achieve some eerily dubious goal. Being the unemphatic motherfuckers that they are ENTPs will not always realize that this has happened even in hindsight; they are frankly terrible at sensing (as well as making sense of) their own emotions. They don't often need to, so they lack both inclination and experience. Hence if they don't somehow end up in the grip of their inferior they will probably forget all about their anger once it subsides. Sometimes leaving a battered crying victim feeling like "the sensitive one" for still being hurt while the ENTP is a merry as ever. If it goes on too long however even the seemingly endless stamina of an ENTP will not be enough. When in control the tertiary is highly taxing. Inferior grips due to external conflicts do not happen often, but more often by far than ENFPs ENTPs will not back down before it does. They don't feel it coming since alas they suck at keeping watch on their own emotional state, it will appear to them as if though they are doing what they always do until they don't want to do it all. In this regard they are at disadvantage compared to their F counterpart.
Such is the demise of the ENTP.
INJ's, have some similar tendencies. They too care less than do J-doms about being bested in an argument, not waiting for an intuition they sense is on its way, theirs is already be in place. INJ's just don't know how to put a novel intuition in words before it has been painstakingly moulded into shape. Their path of decline into anger and eventual defeat by their own inferior looks different. Moreover, they are not so likely to put forth dubious arguments as they are to make ambiguous ones. Attempting to prematurely hatch their intuitions these break out of their eggs fetuses still, resembling all and any species in their incomplete form. Not to the INJ though, who will look upon these sorry unidentifiable things as if were they truth incarnated--much to the chagrin of the other part.