See Also:

whereupon (iou)



whereupon adverb & conjunction. ME.
[from WHERE pronoun + UPON preposition.]
I. interrog. adverb.
Upon what; concerning what; for what reason. ME-M17.
II. rel. adverb & conjunction.
Of position: upon which. Now arch. & formal. ME.
b. On to which. M16-M17.
a. With clause as antecedent: on which account, for which reason; of derivation from which (by inference). LME-L17.
b. Upon which as a basis of action, argument, etc. Now rare or obsolete. E16.
Upon the occurrence of which; immediately after and in consequence of which. LME.
T. Hardy The room began to darken, whereupon Christopher arose to leave.
Concerning which. Now rare or obsolete. M16.