Important Antonyms Starting with S

Safe → Unsafe / Dangerous

Sad → Happy / Cheerful

Satisfy → Dissatisfy / Displease

Strong → Weak

Success → Failure

Start → End / Finish

Slow → Fast / Quick

Simple → Complicated / Complex

Soft → Hard / Rough

Sweet → Bitter / Sour

Small → Big / Large

Short → Long / Tall

Sharp → Blunt / Dull

Shallow → Deep

Separate → Join / Unite

Serious → Funny / Trivial

Secure → Insecure

Straight → Crooked / Bent

Silent → Noisy / Talkative

Stronger → Weaker

Successive → Interrupted

Stable → Unstable

Superior → Inferior

Important Antonyms Starting with S

Surplus → Deficit / Shortage

Sour → Sweet

Smooth → Rough

Safe journey → Risky journey

Sad news → Happy news

Satisfying answer → Dissatisfying answer

Strong argument → Weak argument

Success story → Failure story

Starting point → Ending point

Slow learner → Fast learner

Simple method → Complex method

Soft touch → Hard touch

Sweet smile → Bitter face

Small quantity → Large quantity

Short break → Long break

Sharp mind → Dull mind

Shallow pool → Deep pool

Separate rooms → Joined rooms

Serious matter → Trivial matter

Secure future → Insecure future

Straight line → Crooked line

Silent class → Noisy class

Strong player → Weak player

Stable government → Unstable government

Superior product → Inferior product

Surplus food → Deficit of food

Sour taste → Sweet taste

Smooth road → Rough road

Safe place → Dangerous place

Sad ending → Happy ending

Satisfied customer → Dissatisfied customer

Strong structure → Weak structure

Successful attempt → Failed attempt

Start work → Finish work

Important Antonyms Starting with S

Slow speed → High speed

Simple dress → Fancy dress

Soft heart → Hard heart

Sweet voice → Harsh voice

Small house → Big house

Short story → Long story

Sharp knife → Blunt knife

Shallow knowledge → Deep knowledge

Separate opinions → United opinions

Serious student → Carefree student

Secure job → Insecure job

Straight talk → Twisted talk

Silent room → Loud room

Strong current → Weak current

Stable mind → Unstable mind

Superior quality → Inferior quality

Surplus money → Shortage of money

Sour fruit → Sweet fruit

Smooth journey → Rough journey

Safe investment → Risky investment

Sad memory → Happy memory

Satisfying result → Dissatisfying result

Strong position → Weak position

Success achieved → Failure faced

Start early → Finish late

Slow process → Quick process

Simple solution → Complex solution

Soft pillow → Hard pillow

Sweet food → Bitter food

Important Antonyms Starting with S

Small town → Big city

Short answer → Long answer

Sharp eyesight → Weak eyesight

Shallow lake → Deep lake

Separate path → Common path

Serious tone → Joking tone

Secure password → Insecure password

Straightforward → Dishonest / Crooked

Silent mode → Ringing mode

Strong economy → Weak economy

Stable position → Shaky position

Superior rank → Lower rank

Surplus supply → Scarcity

Sweet nature → Harsh nature

Important Antonyms Starting with R