somethin - Idioms by The Free Dictionary To do something quickly, unexpectedly, or abruptly, especially without warning or explanation I must have offended him, because halfway through the conversation he just up and left The town has been in a panic searching for a young girl who up and vanished over the weekend
What is the difference between somethin and . . . - HiNative Also, when you're writing in English and you're not quoting someone that said "somethin'" instead of "something" make sure to spell it with the "g" because that is the proper way to spell it