Consequently means as a result of that. Consequently, the plan failed, and consequently we left.
It claims cause and not merely sequence, which is a stronger thing than it looks: consequently says the second thing happened because of the first. It is formal, and it belongs at the start of a sentence with a comma after it.
1adverbconsequentlyAs a result of that.
“He missed the last bus and consequently had to walk home in the rain.”
consequently is a connective.
Consequent plus -ly, from Latin consequi, to follow after — con plus sequi, to follow.
Proto-Indo-European
*sekʷ-
Middle English
consequentely
English, today
consequently
From Middle English consequentely, consequentliche, consequently; equivalent to consequent + -ly.
Etymology from Wiktionary, CC BY-SA