presto
Concise Oxford English Dictionary © 2008 Oxford University Press:
presto/ˈprestəʊ/
▶adverb & adjective Music in a quick tempo. ▶exclamation (Brit. also hey presto) announcing the successful completion of a conjuring trick or other surprising achievement.
– origin Ital., ‘quick, quickly’, from late L. praestus ‘ready’, from L. praesto ‘at hand’.
'presto' also found in these Oxford entries:

