siseo means hiss — a common term in Funny Words. Learn how it's used in a real-world example.
📅 Published: September 23, 2025
siseo
noun • /[see-SE-o]/
hiss
Example:
Escuché un siseo detrás de mí.
I heard a hiss behind me.
🧠 What does siseo mean?
Siseo refers to a hissing sound, often made by animals like snakes or cats. It can also describe the characteristic sound of the Spanish 'c' before 'i' and 'e' (like in 'ceceo'), which some learners struggle to distinguish from the 's' sound. Think of the subtle difference between 'sin' (without) and 'cin' (pronounced similarly to 'thin' in English). While 'cin' isn't a real word, it illustrates the hissing 'c' sound.
📚 Extra examples
- El gato hizo un siseo amenazante.
The cat made a threatening hiss. - El siseo de la serpiente me asustó.
The snake's hiss scared me. - Algunos estudiantes de español confunden el siseo de la 'c' con el sonido de la 's'.
Some Spanish students confuse the hiss of the 'c' with the sound of 's'. 
💡 Did You Know?
The 'c' before 'i' and 'e' creating a hissing sound is called 'ceceo' in Spanish phonetics. It's a key feature of Spanish pronunciation.
🔁 Synonyms & opposites of "siseo"
Synonyms: silbido, susurro
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