遭う[au] to meet
遭わせる[awaseru] to make (someone) to meet
災難に遭う[sainanniau] to meet with misfortune
遭遇[souguu] encounter
遭難[sounan] disaster

遭難者[sounansha] victim
遭難信号[sounanshingou] distress signal
夕立に遭う[yuudachiniau] to be caught in an evening shower
出遭う[deau] to meet (by chance)
めに遭う[meniau] to go through