Definify.com
Webster 1913 Edition
Whenceforth
Whenceˊforth′
,adv.
 From, or forth from, what or which place; whence. 
[Obs.] 
Spenser.
 Definition 2025
whenceforth
whenceforth
English
Adverb
whenceforth (not comparable)
-  (formal) From which place, time, or point forth; forth from which; onward from which.
- With great reluctance, he was introduced to pomegranates, whenceforth he refused any other fruit.
 
-  (formal, interrogative) Forth from what place, time, or point; onward from what place, time, or point.
- Whenceforth ought we to maintain radio-silence?