Most frequent adjectives in Hyginus, Fabulae

alius, alia, aliud: another
alter, altera, alterum: other (of two)
ceterus, cetera, ceterum: the other, the remainder
duo, duae, duo (irregular): two
idem, eadem, idem: the same
inferus, infera, inferum: lower
liber, libera, liberum: free
magnus, magna, magnum: great, large
mortalis, mortale: mortal, subject to death
multus, multa, multum: much (sg.), many (pl.)
omnis, omne: each (sg.), all (pl.)
primus, prima, primum: first
regius, regia, regium: royal, kingly
sacer, sacra, sacrum: holy, sacred
septem (indeclinable): seven
socius, socia, socium: allied
suus, sua, suum: reflexive possessive adjective, his own, her own
tantus, tanta, tantum: so great
unus, una, unum: a single