Italian Word of the Day: Pullulare (to proliferate / to brim / to swarm)

Written by Heather Broster

Last Update:

I don’t know about you, but I tend to be irresistibly drawn to words that sound exactly like the thing or action they describe. These onomatopoeic gems are relatively rare but I find that they infuse language with such flavour and vibrance, especially in one as naturally melodic as Italian!

Today we will be talking about one such word – pullulare – which can be translated in dozens of ways including:

  • to proliferate
  • to teem
  • to multiply
  • to swarm
  • to bristle
  • to overflow
  • to pullulate (yes, this verb exists in English too!)

You get the idea!

Italian word "pullulare"

Before we begin, I should clarify that pullulare isn’t actually onomatopoeic in origin – it comes from the Latin verb pullulare, which in turn comes from pullŭlus, which meant both the shoot or sprout of a plant, and a young animal. The word can be traced back even further to pullus, which also meant both sprout and chick. Indeed, the ancient meaning of pullulare was, in fact, to sprout or to put out shoots. (Today Italians would use the verb germogliare instead.)

Important: while pullulate isn’t a particularly common verb in English, pullulare continues to be used in everyday Italian.

Pullulare is an -ARE verb, which should be conjugated in the following way in the present tense. (And yes, I admit some of these are a bit of a tongue-twister!)

  • io pullulo
  • tu pulluli
  • lui / lei pullula
  • noi pulluliamo
  • voi pullulate
  • loro pullulano

So, what kinds of things can pullulare? Well, pretty much anything that has the potential to proliferate, from swarming insects to people buzzing around the supermarket on a busy Sunday afternoon.



Although most frequently used to describe large numbers of people, animals and insects, pullulare‘s usage also extends to physical objects and abstract ideas, such as houses, events, restaurants and so on. In this case, the translation is more likely to be “full of” or “to spring/pop up”.



While I personally have a soft spot for pullulare, there are other synonyms you can use such as moltiplicarsi, proliferare, brulicare, or formicolare.

a swarm of insects

Ethics statement: Below you will find affiliate links. If you buy something after clicking the link, we will receive a small commission. To know more about our ethics, you can visit our full disclosure page. Thank you!

Lingopie (affiliate link) is the Netflix of language learning application that uses real TV shows and movies to help you learn a new language. You can choose a show to watch based on your fluency level, and use the interactive subtitles to get instant translations to help you learn quickly.

Are you interested in improving your Italian in a fun and stress-free manner? Then we highly recommend Serena Capilli's short stories in Italian (affiliate link), designed for beginners, advanced beginners, and lower intermediate learners (A1-B1 CEFR). These stories have been optimised for English speakers in search of a fun, laid-back learning experience! Read our full review here.


Leave a Comment