ultimately: although not is if you really have a single, correct meaning, or is just another of the many informal words invented out of the Spanish dictionary, if is which is used as an expression followed by a conclusion that generally tends to sound with some disgust or negatively, i.e. When you suddenly cut a conversation with one or more people leaving as clear your process or last word without deceo of changing or leaving excluded the opinion of the others for example: If a group of friends are saying about the car q must buy one of them but they all have a different opinion between if, and to reach an agreement, can simply respond something as: ultimately, I be the owner of the car thus sere I who choose!