Iono
iono definition by Slang.net
This page explains what the abbreviation "iono" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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Iono is a phonetic abbreviation that blends together the words "I don't know." It's one of many ways to communicate you are unsure about something, with other common options being IDK and dunno.
You might see iono in texts or online in forums, messages, and social media. For example, if your brother asks you when you'll be home from your friends, you might text back, "Iono. Don't wait up for me." Or, you might post on a TikTok, "Iono what's going on here, but it looks awesome!"