What it means
Iffy means something feels off, uncertain, or not quite safe to trust. You use it for dodgy plans, shaky excuses, sketchy food, or anything that gives off a little warning-bell vibe. It’s casual and common, especially in British English, and it usually lands softer than saying something’s outright bad.
Usage examples
"You sure this milk’s fine? Give it a sniff. Nah, it’s proper iffy. Bin it before you end up hugging the loo."
"The forecast is a bit iffy for Saturday, so bring a coat just in case the barbecue turns into a paddling pool."
"His excuse sounded iffy from the start, too many details that did not quite line up."
"That website looks a bit iffy, mate. I’m not putting my card details in there and donating my bank account to the chaos goblins."
"We could drive up tonight, but the car’s been making an iffy noise all week, so I’m not exactly feeling road-trip brave."
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Where it comes from
Iffy showed up in English in the 1920s, built from if plus the adjective ending -y. It started as a quick way to say something was full of ifs, meaning uncertain, doubtful, or not solid enough to trust. Since then it’s stayed a very everyday word in both British and American English.
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