Of prime importance; before anything else; especially.(adverb)
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Use "above all" in a sentence
"Woonsocket and then to the various mill towns along the little streams of the Blackstone and the Pawtucket, and above all to Fall"
"Canonists enumerate six kinds of perfect proof: the unshaken deposition of two witnesses, who are above all suspicion; a public document, or other instrument having the force of a public document, as, for instance, a certified copy of a public instrument; conclusive presumption of law; the decisive oath; judicial confession; evidence or notoriety of the fact."
"Antequera as well as the Comuneros vented their rage first and above all on the Jesuits and the Reduction Indians, who proved themselves the strongest bulwark of the Spanish rule."