单词 | know/say for certain |
释义 | know/say for certainC1 toknowor say something withoutdoubt: I don'tknowforcertainif she's coming. I can't say forcertainhowlongI'll be there. There's very little weknowforcertainabout hisemotionallife. Sheknewforcertainthat hisproblemswent beyond being indebt. After ayearofinvestigations, no one canyetsay forcertainwhy she waskilled. See also certainadjective(WITHOUT DOUBT) certain about something
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