needful

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++need·ful /ˈniːdfəl/ adjective old use  MUSTnecessary 必要的，需要的 needful expenditure 必要的开支

Examples from the Corpus

needful• It was not spoken of but drawn upon when it was needful.• The proposed discount will go only a certain way towards doing what is needful.• He might be seen returning, and it was needful he should come by the way he would have taken to Longner.• To effect the separation it was needful that the particle size was more or less the same.• It will be needful to find them, Master Hussey.

need·ful adjectiveChineseSyllable  

Corpus necessary

needful
need‧ful /ˈniːdfəl/ adjective old use
necessary:
    needful expenditure

need·fulBrE /ˈniːdfl/ 🔊NAmE /ˈniːdfl/ 🔊 adjective (old-fashioned) necessary 必要的；必需的；必然的