Chinese words with 必 character meaning (HSK)

必须

BI4, XU1
to have to, must, compulsory, necessarily

必然

BI4, RAN2
inevitable, certain, necessity

必要

BI4, YAO4
necessary, essential, indispensable, required

何必

HE2, BI4
there is no need, why should

未必

WEI4, BI4
not necessarily, maybe not

势必

SHI4, BI4
is bound to (happen)

务必

WU4, BI4
must, to need to, to be sure to