Instead is defined as something chosen in place of or as a substitute for something else.(adverb)
When you want to have ice cream but you are out and you settle for pudding, this is an example of a situation where you had pudding instead.
See instead in Webster's New World College Dictionary
Origin: in + stead
See instead in American Heritage Dictionary 4
Origin: Middle English in sted of, in place of
Origin: : in, in; see in1
Origin: + stede, place; see stead
Origin: + of, of; see of.
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