Lissu as a Baby Name. Meaning and Origin of Lissu

What is the meaning of the name Lissu ?

The baby name Lissu is a Female name , 2 syllables long and is pronounced LEE-soo (Finnish: /ˈlissu/).

Lissu is Finnish in Origin.

Lissu is a Finnish (also found in Estonian) pet form of Liisa/Liis, themselves local forms of Elizabeth, from Hebrew Elisheva. The -su ending follows a common Finnish nickname pattern that softens and familiarizes the base name. Through its Elizabeth-root, Lissu carries the meaning “my God is an oath” or “pledged to God,” a venerable theophoric sense shared across many European forms.

In 20th‑century Finnish homes it was mainly an affectionate byname; from the late 1900s onward it has occasionally appeared on birth registers as an independent given name, though it remains uncommon and casual in feel. Related variants include Liisa, Liisi, Liis, and Estonian Liisu, alongside broader cognates such as Lisa, Lise, Elise, Elisa, Eliza, Elisabet/Eliisabet, and Lisbet. Parents drawn to Lissu often appreciate its brisk, bright sound and Nordic character while retaining Elizabeth’s enduring spiritual resonance.