| Idiom | Meaning | Example |
| on the fringe |
not familiar, radical, not mainstream
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The Canasaurus Party is new - definitely on the fringe.
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| on the fritz |
not operating, broken, out of order
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The VCR is on the fritz again. We can't watch videos tonight.
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| Several conjectures about the origin can be found on www.worldwidewords.org/qa/qa-ont4.htm
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| on the go |
busy, not stopping to rest
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We've been on the go all day, shopping and preparing food.
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| on the ground floor |
(See get in on the ground floor)
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| on the heels |
immediately after, following
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On the heels of the typhoon was a five-day rain.
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| on the lam |
running away from the police, lay low
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When he's not in jail, he's on the lam - always running.
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| on the limp |
limping, walking with a leg injury
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Norman is on the limp today. He sprained his ankle playing ball.
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| on the loose |
free, running around, not in a pen or cage
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The zoo notified the media that a giraffe is on the loose.
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| on the make |
looking for romance or sex
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Most of the men in the bar were on the make, looking for action.
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| on the mark |
accurate, correct, dead on, spot on
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Your answer is right on the mark. Canada became a country in 1867.
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