incertituden.
英 ɪn'sɜːtɪtjuːd | 美 ɪn'sɝtə,tjʊd
中文n. 不确定，无信心；疑惑
词根词源
incertitude (n.)mid-15c., "variability," from Middle French incertitude (14c.), from Late Latin incertitudinem (nominative incertitudo); see certitude. Incertain "uncertain" and incertainty "uncertainty" also were living words in Middle English.
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