"At need" is a phrase that refers to something that is needed or required at a certain time or in a particular situation. There are numerous synonyms that can be used in place of "at need." One synonym is "in time of necessity." This phrase suggests that something is needed urgently or at a crucial moment. Another synonym is "in an emergency." This phrase implies that something is needed immediately to address a crisis or unexpected situation. Other synonyms for "at need" include: when required, as required, on demand, on request, at request, as needed, and as occasion arises. All of these phrases convey the idea that something is needed in a certain circumstance or a specific time.