Sparing, frugal, thrifty, economical can all mean exercising or manifesting careful and unwasteful use of one's money, goods, and resources.
Spacious vs Commodious vs Capacious vs Ample
Spacious, commodious, capacious, ample are comparable when they mean larger in extent than the average.
Sour vs Acid vs Acidulous vs Tart vs Dry
Sour, acid, acidulous, tart, dry mean having a taste devoid of sweetness.
Sound vs Noise
Sound, noise both mean a sensation or effect produced by the stimulation of the auditory receptors of the ear and the auditory centers of the brain.
Soul vs Spirit
Soul, spirit can both denote an immaterial entity that is held to be distinguishable from and felt as superior to the body with which it is associated during the life of the individual and that in most religious beliefs is regarded as immortal, surviving the death of the body.
Sorrow vs Grief vs Heartache vs Heartbreak vs Anguish vs Woe vs Regret
Sorrow, grief, heartache, heartbreak, anguish, woe, regret , though not close synonyms, share the idea of distress of mind.
Sophisticated vs Worldly-wise vs Worldly vs Blasé vs Disillusioned
Sophisticated, worldly-wise, worldly, blasé, disillusioned are synonymous when they apply to persons, to their attitudes and actions, or to products of human skill and effort and mean experienced or revealing experience in the ways of the world.
Solve vs Resolve vs Unfold vs Unravel vs Decipher
Solve, resolve, unfold, unravel, decipher can all mean to make clear or apparent or intelligible what is obscure or mysterious or incomprehensible.
Solitude vs Isolation vs Alienation vs Seclusion
Solitude, isolation, alienation, seclusion mean the state of one that is alone.
Soil vs Dirty vs Sully vs Tarnish vs Foul vs Befoul vs Smirch vs Besmirch vs Grime vs Begrime
Soil, dirty, sully, tarnish, foul, befoul, smirch, besmirch, grime, begrime can all mean to make or become unclean.
Soft vs Bland vs Mild vs Gentle vs Smooth vs Lenient vs Balmy
Soft, bland, mild, gentle, smooth, lenient, balmy are applied to things with respect to the sensations they evoke or the impressions they produce and mean pleasantly agreeable because devoid of all harshness or roughness.
Social vs Gregarious vs Cooperative vs Convivial vs Companionable vs Hospitable
Social, gregarious, cooperative, convivial, companionable, hospitable are comparable rather than synonymous terms that all involve and often stress the idea of having or manifesting a liking for or attraction to the company of others.