Long odd can be replaced with words like "bizarre," "perplexing," or "unconventional." These synonyms emphasize the unusual or unexpected nature of something that stands out as different from the norm. We can also use words like "strange," "weird," or "unusual" to convey a similar meaning. The phrase "long odd" may imply both a lengthiness and oddity in its subject, which makes the meaning a bit more nuanced. By using words with a similar tone, we can emphasize the peculiarity of something in a way that feels more specific and descriptive.