wan‧na /ˈwɒnə $ ˈwɑː-/ 
 a short form of ‘want to’ or ‘want a’, used in writing to show how people sound when they speak 
 [TahlilGaran] Dictionary of Contemporary English ▲
 wanna BAD
 BAD: We didn't wanna miss the train.
 GOOD
 GOOD: We didn't want to miss the train.
 Usage Note:
 Usage Note:See note at GONNA (
gonna) 
 [TahlilGaran] Dictionary of Common Errors ▲