Meanings
Need is a noun, be a subjunctive. Perhaps an alteration of Old English phrases like ġif þearf bēo, literally “if need be.” That phrase would have been completely unidiomatic, equivalent to “if a need exists” or “if there is a need.” This is because (1) Old English had no indefinite article, (2) the word for "to be" was also the default word for "to exist" and translates the modern phrase "there is," and (3) the subjunctive mood was much more common and often translates the Modern English indicative.
How to pronounce "if need be":
AU
If necessary; if there is a need.
Example Sentences
1
I will stay late at work tonight if need be.
2
I can borrow money from my parents if need be.
3
We can reschedule the meeting to a later time if need be.
4
I will take a taxi if need be to make it on time.
5
She can ask for help if need be; her friends are always there for her.
