Fossick is a word mostly used in Australia and New Zealand, meaning to search for something in a disorganized manner. While it might not be the most familiar term to some, there are many synonyms that can be used instead. "Rummage" or "rummage through" are excellent alternatives that convey the same meaning. Other synonyms for fossick include "root around," "scrounge," "prowl," "hunt through," "search through," and "comb through." You can use any of these words interchangeably if you need to convey the meaning of fossick in a way that is more readily understandable to a broader audience.