| 词汇 | sullen |
| 词根词缀 | 词源： 1570s, alteration of M.E. soleyn "unique, singular," from Anglo-Fr. *solein, formed on the pattern of O.Fr. soltain, from O.Fr. soul "single" (see sole (2)). The sense shift in M.E. from "solitary" to "morose" occurred between about 1380 and 1400. |
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