adjective:not moving or making a sound; calm and quiet
The lake was perfectly still in the morning light.
adjective:continuing to exist, be present, or occur; unchanged over time
Even after ten years, the original design is still the most popular.
adverb:nevertheless; in spite of that
It was raining heavily, but we still decided to go for a hike.
verb:to make or become still; to quieten
The mother tried to still her crying baby.