In saying the /s/ sound, just copy the sound of a hissing snake. Bite and put your upper and lower teeth together, relax your lips and exhale some air going to the middle of your teeth. You will hear a hissing sound, almost similar to a snake's.
Practice these words:
- asset
- assembly
- boss
- Brussels
- compass
- disseminate
- estranged
- focus
- gastric
- hostile
- insolent
- jostle
- Kingston
- luster
- mosquito
- nausea
- oscillate
- passive
- quasi
- rustic
- sassy
- solid
- solvent
- serpentine
- Tuscany
- understanding
- vase
- western
- yeast
- zealous