quasi (adv.) Look up quasi at Dictionary.com
late 15c., Latin, in hypothetical comparisons, "as if, just as if, as though;" in real comparisons "just as, as;" in approximation, "somewhat like, nearly, not far from;" from quam "as" relative pronomial adverb of manner (see who) + si "if," from PIE pronomial stem *swo- "so" (see so).