QUAGMIRE
Source: 566, 567
quagmire. Quagmire, n. a bog, boggy place, shaking marsh
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Quag″mire′ (?), n. [[Quake + mire.]] Soft, wet, miry land, which shakes or yields under the feet. “A spot surrounded by quagmires, which rendered it difficult of access.” Palfrey. Syn. — Morass; marsh; bog; swamp; fen; slough.