15 strokes
                                                    
                        Jouyou kanji
            Taught in 11th grade
    
                                            crush, smash, break, dissipate
Kun'yomi
- つ - ぶ - す - to smash ②to shut down ③to wreck ④to butcher 
- つ - ぶ - れ - る - to be crushed ②to go bankrupt ③to be ruined (of a plan) ④to be lost (of one's voice, eyesight, sense of smell, etc.) 
- つ - い - え - る - to collapse (of a building, dream, plan, etc.) ②to be completely defeated (in battle) 
On'yomi
- カイ 
- エ 
Character Breakdown
crush, smash, break
つぶ.す つい.える カイ (11th)
precious, value, prize
キ ぎ とうと.い (6th, N1)
Common Words
                                    to be crushed ②to go bankrupt ③to be ruined (of a plan) ④to be lost (of one's voice, eyesight, sense of smell, etc.)
                                
                            
                                    publicly predicting the future developments of a creative work (making it difficult for the creator to use those ideas)
                                
                            References
| Unicode hex code | 6F70 | 
| JIS X 0208 | 1-36-57 | 
| Nelson, A. Classic Nelson | 2701 | 
| Haig, J. New Nelson Japanese-English Character Dictionary | 3335 | 
| Halpern, J. New Japanese-English Character Dictionary | 743 | 
| Halpern, J. Kodansha Kanji Dictionary | 919 | 
| Halpern, J. Kanji Learners Dictionary (Kodansha), 2nd edition (2013) | 677 | 
| Heisig, J. Remembering The Kanji | 2319 | 
| Heisig, J. Remembering The Kanji, Sixth Ed. | 1911 | 
| Morohashi Daikanwajiten | 18281 | 
| Spahn and Hadamitzky Kanji and Kana (2011 edition) | 1229 | 
| Tuttle Dictionary Descriptor Code | 3a12.14 | 
| Four corner code | 3518.6 |