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Webster 1913 Edition
Indubitate
In-du′bi-tate
,Adj.
 [L. 
indubitatus
; pref. in- 
not + dubitatus
, p. p. of dubitare 
to doubt.] Not questioned or doubtful; evident; certain. 
[Obs.] 
Bacon.
 In-du′bi-tate
,Verb.
 T.
 [L. 
indubitatus
, p. p. of indubitare
; pref. in- 
in + dubitare 
to doubt.] To bring into doubt; to cause to be doubted. 
[Obs.] 
To conceal, or 
indubitate
, his exigency. Sir T. Browne.
Webster 1828 Edition
Indubitate
INDU'BITATE
,Adj.
 Not questioned; evident; certain. [Not used.]
Definition 2025
indubitate
indubitate
English
Verb
indubitate (third-person singular simple present indubitates, present participle indubitating, simple past and past participle indubitated)
-  (obsolete) To bring into doubt; to cause to be doubted.
-  Sir Thomas Browne
- To conceal, or indubitate, his exigency.
 
 
 -  Sir Thomas Browne
 
Adjective
indubitate (comparative more indubitate, superlative most indubitate)
-  Not questioned or doubtful; evident; certain.
- (Can we find and add a quotation of Francis Bacon to this entry?)
 
 
Latin
Adjective
indubitāte
- vocative masculine singular of indubitātus
 
References
- indubitate in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
 - Félix Gaffiot (1934), “indubitate”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.