The spelling of the word "upsdowns" may seem a bit peculiar at first glance. However, when breaking down the word using IPA phonetic transcription, it becomes more clear. "Ups" is pronounced as "ʌps", while "downs" is pronounced as "daʊnz". So, when combined, the phonetic spelling of "upsdowns" is "ʌpsdaʊnz". While the spelling may not quite match the pronunciation, it is still a valid spelling of the word.