Matching Pairs Ordinal numbers idiomsOnline version Match each ordinal number idiom to the right definition by Antonia Padilla 1 play second fiddle (to sb/sth) 2 opportunity knocks but once 3 second nature 4 a third wheel 5 third degree 6 third time lucky/third time's a charm 7 first come, first served 8 sixth sense 9 at the eleventh hour 10 for the umpteenth time something that becomes automatic or natural due to practice. asking serious questions and/or giving somebody a rough treatment to get information from them. having a less important position than somebody/something else. it happens again after having happened many times before – used when you are annoyed that it has happened so often. doing something at the last possible moment. a special ability to know something without using any of the five senses that include sight, touch, hearing, smell, or taste. we should take an opportunity (or chance) when it comes. According to this saying, it will not come again. people will be dealt with or given sth in the order in which they arrive. used to say that two efforts at something have already failed, but perhaps the third will be successful. being the third person in a group or situation where there are already two people who are romantically involved.