sipati

1. (of a liquid) to pour
   Sipaj mi malo vode, molim te. — Pour me some water, please.
   Uvek sipa previše mleka u kafu. — He always pours too much milk into his coffee.
2. (of dry substances) to pour; to sprinkle
   Ne sipaj toliko soli u supu! — Don't put so much salt in the soup!
   Deca sipaju pesak u kofice. — The kids are pouring sand into their buckets.
3. colloq. (of words, jokes) to reel off; to pour out
   Celo veče je sipao viceve. — He was cracking jokes all evening.

Sipati is commonly used for a single completed action too (Sipaj mi vode). The perfective is nasuti; colloquial sipnuti usually means to pour just a little.