necessary
word
Definition
If something is necessary, you need it or it must happen for a particular purpose, result, or situation. It is used for things that are required, not just helpful or nice to have.
Usage & Nuances
Often followed by 'to' or 'for': 'necessary to leave', 'necessary for success'. Stronger than 'helpful' or 'useful', but sometimes less absolute than 'essential'. Common patterns: 'it is necessary to...', 'if necessary', and 'as necessary'. In everyday speech, people also often say 'need' or 'have to' instead.
Example Sentences
No rush—just send me the files when necessary changes are done.
natural
Water is necessary for life.
basic
Is it necessary to bring my passport?
basic
A warm coat is necessary in winter.
basic
If it's necessary, we can stay a little longer and finish tonight.
natural
I don't want to argue, but this conversation is necessary.
natural