Countable Nouns That Start with SY and End with IS

Explore 29 verified English countable nouns starting with SY and ending with IS, including Synthesis, Synopsis, Symbiosis, Symphysis, Synapsis, Syllepsis and Synchondrosis. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.

Refine list...
JUMP:
Sort:

Group:

Case:

View:

JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with SYC
1 words
sycosis
Starts with SYL
1 words
syllepsis
Starts with SYM
3 words
symbiosis
symphysis
symptosis
Starts with SYN
21 words
synthesis
synopsis
synapsis
synchondrosis
synovitis
syndesmosis
synarthrosis
syneresis
synostosis
synodontis
synchysis
synaxis
syndesis
synizesis
synchoresis
syntenosis
synoeciosis
synthyris
synanthesis
syneilesis
synecphonesis
Starts with SYP
1 words
syphilopsychosis
Starts with SYR
1 words
syrtis
Starts with SYS
1 words
syssarcosis

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.