Yes, a toilet can occasionally leak from the base even without being flushed, though it is less common. If water is seeping out around the porcelain base when no one has used the toilet recently, the source is usually a leaking water supply line, a loose tank-to-bowl connection trickling water onto the floor, or groundwater wicking upward through a damaged subfloor from a nearby plumbing leak. Verification: Dry the floor completely, wrap paper towels around the supply line and tank bolts, and monitor for moisture accumulation.
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