______able

Suitable, comfortable, memorable, unstoppable, unshakable, unbelievable, uncomfortable, invincible, available, knowledgeable, unthinkable.

Unthinkable = very difficult to believe

______ ous

Delicious, ambitious, gorgeous, fabulous, obvious, harmonious, furious.

______ ful

Wonderful, helpful, graceful, thankful, colourful, beautiful, peaceful, hopeful, deceitful, regretful.

One of my friends was deceitful to me

______ ive

Productive, active, innovative, extensive, expensive, abusive, selective, alternative, impressive.

Productive= achieving or producing a significant amount or result

The guy was abusive because he was rude to his wife in the public

Selective = fussy

______ less

Useless, helpless, hopeless, speechless, worthless, ruthless, careless, thankless.

Worthless = has no value to you

Ruthless = no compassion, very direct

Other adjective

Incredible