Singular
NOMINATIVE
ar maith
▪an t-ar maith
GENITIVE
air mhaith
▪an air mhaith
NOTE When the definite article
(an)
is not present, generally the nominative is used instead of the genitive:
ag lorg an air mhaith, le haghaidh an air mhaith
but ag lorg ar maith, le haghaidh ar maith.