Word
obligatory, adj.
morally or legally constraining or binding
<adj.all>
obligatory
sample sentences
"attendance is obligatory"
"an obligatory contribution"
lexical pointers
antonym
optional
semantic pointers
also see
necessary
similar to
bounden
mandatory, required, compulsory
de rigueur
imposed
incumbent on
indispensable
prerequisite
required by obligation or compulsion or convention
<adj.all>
obligatory
sample sentences
"he made all the obligatory apologies"
semantic pointers
similar to
necessary