to become infected

Today one of your patients is from a rural area of Guatemala. Thanks to your prior interactions with her, you know that she uses more slang expressions than otherwise. You need to explain  how to care for her injury so that it doesn’t become infected. Instead of the traditional phraseology, you decide to try out a new word you learned from that pocket-sized, blue book you keep in your desk drawer. After the word, “inconarse” leaves your lips, a smile brightens your patient’s face. You’ve connected.

infected, to become

inconarse, madurar