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Related to fall through: fall through the cracks, fell through
[for something, such as plans] to fail. Our party for next Saturday fell through. I hope our plans don't fall through.
fall through something
to fall and break through something. One of the skaters fell through the thin ice. A number of hailstones fell through the roof of the greenhouse.
to not happen Our plans for the weekend fell through.
Fail, miscarry, as in The proposed amendment fell through, or I hope our plans won't fall through. [Late 1700s]
1. To drop through some object or surface: The skaters fell through the thin ice.
2. To fail to occur: The trip fell through due to lack of interest.
3. To fail to be carried out: Our plans fell through at the last minute.