Webster's Revised Unabridged Dictionary
OF. doutable, L. dubitabilis, from dubitare,. Cf. Dubitable
Miller—the redoubtable, doubtable New York Times scoop artist—was on the phone Monday afternoon, giving an interview on her way to get an interview.
Thus, it is doubtable whether or not the CHs identiﬁed in EUV wavelengths really represent open ﬁeld regions.
Influence of Coronal Holes on CMEs in Causing SEP Events