Translation Japanese English: できない
Dictionary: mainできない形容詞 bootless, 
 feckless, 
 fruitless, 
 futile, 
 helpless, 
 incapable, 
 incompetent, 
 ineffective, 
 ineffectual, 
 inept, 
 lost, 
 otiose, 
 pointless, 
 purposeless, 
 senseless, 
 sleeveless, 
 superfluous, 
 unable, 
 unavailing, 
 uneffective, 
 unequal to, 
 unhelpful, 
 unremunerative, 
 useless, 
 vain, 
 wasted.