pronto

UK: /ˈprɒntəʊ/ US: /ˈprɑntoʊ/ ,(pron′tō)

WordReference Random House Learner's Dictionary of American English © 2025

pron•to /ˈprɑntoʊ/   adv. 

1. Informal Terms promptly:
   Do it pronto.

WordReference Random House Unabridged Dictionary of American English © 2025

pron•to  (pron′tō), adv. [Informal.]

1. Informal Terms promptly;
   quickly.

• Latin promptus prompt (adjective, adjectival)
• Spanish (adjective, adjectival and adverb, adverbial) quick, quickly
• 1840–50, American.

Collins Concise English Dictionary © HarperCollins Publishers::

pronto / ˈprɒntəʊ/ adverb

1. at once; promptly

Etymology: 20th Century: from Spanish: quick, from Latin promptus prompt