We found 18 dictionaries that define the word siss:

General (13 matching dictionaries)

1. siss: Merriam-Webster
2. siss: Vocabulary.com
3. Sis's, Siss, sis's, siss: Wordnik
4. siss: Wiktionary
5. siss: Dictionary.com
6. Siss: Online Plain Text English Dictionary
7. siss: Webster's Revised Unabridged, 1913 Edition
8. siss: Rhymezone
9. Siss: AllWords.com Multi-Lingual Dictionary
10. siss: Webster's 1828 Dictionary
11. siss: FreeDictionary.org
12. siss: Mnemonic Dictionary
13. Siss: TheFreeDictionary.com

Computing (1 matching dictionary)

14. siss: Encyclopedia

Miscellaneous (2 matching dictionaries)

15. SISS: Acronym Finder
16. AbbreviationZ (No longer online)

Slang (2 matching dictionaries)

17. siss, siss: Green’s Dictionary of Slang
18. S.I.S.S, siss: Urban Dictionary

(Note: See sissing as well.)

Definitions from Wiktionary (siss) ▸ noun:  (colloquial) A hissing noise. ▸ verb:  (colloquial, intransitive) To make a hissing sound. Similar: hiss, sibilate, sizz, sifflement, sizzling, squeak, sibilant, pish, squit, swish, more... Types: coward, wimp, milksop, mollycoddle, crybaby, sissy, more... Adjectives: dear, sweet, sis, dsm, sudden, glorious ▸ Words similar to siss ▸ Usage examples for siss ▸ Idioms related to siss ▸ Wikipedia articles (New!) ▸ Popular adjectives describing siss ▸ Words that often appear near siss ▸ Rhymes of siss ▸ Invented words related to siss