Savage
Synonym: fierce

Scale
Synonym: luxurious

Scarce
Synonym: rare

Seadoned
Synonym: experienced

Secluded
Synonym: hidden

Sensational
Synonm: thrilling

Serene
Synonym: quiet

Severe
Synonym: harsh

Sheer
Synonym: steep

Shrewd
Synonym: clever

Shrill
Synonym: high-pitched

Shy
Synonym: timid

Significant
Synonym: important

Slender
Synonym: thin

Slim
Synonym: slender

Sluggish
Synonym: slow

Sly
Synonym: clever

Solitary
Synonyym: alone

Somber
Synonym: serious

Sound
Synonym: secure, safe