- 想像【そうぞう】 - imagination, supposition, guess 
- 予想【よそう】 - expectation, anticipation, prediction, forecast, conjecture 
- 理想【りそう】 - ideal, ideals 
- 感想【かんそう】 - impressions, thoughts, feelings, reactions 
- 妄想【もうそう】 - delusion, wild idea, (wild) fancy, (ridiculous) fantasy 
- 予想外【よそうがい】 - unexpected, unforeseen, strange 
- 発想【はっそう】 - idea, conception, way of thinking, approach, expression 
- 想定【そうてい】 - hypothesis, supposition, assumption 
- 幻想【げんそう】 - fantasy, illusion, vision, dream 
- 想像力【そうぞうりょく】 - (power of) imagination 
- 空想【くうそう】 - daydream, fantasy, fancy, vision 
- 可哀想【かわいそう】 - poor, pitiable, pathetic, pitiful 
- 思想【しそう】 - thought, idea, ideology 
- 構想【こうそう】 - plan, plot, idea, conception, vision, scheme 
- 回想【かいそう】 - recollection, retrospection, reflection, reminiscence 
- 愛想【あいそ】 - amiability, friendliness, affability, sociability, fondness (of someone), affection, liking, compliments, civilities, courtesies, flattery, hospitality, special treatment, entertainment, bill (at a restaurant), check 
- 連想【れんそう】 - association (of ideas), being reminded (of something), suggestion 
- 瞑想【めいそう】 - meditation (with closed eyes), contemplation 
- 夢想【むそう】 - dream, vision, reverie 
- 理想的【りそうてき】 - ideal