singly
From LSJ
Cras amet qui numquam amavit quique amavit cras amet → May he love tomorrow who has never loved before; And may he who has loved, love tomorrow as well.
English > Greek (Woodhouse)
adjective
each separately: P. καθ' ἕκαστον.
by oneself: P. and V. αὐτός, καθ' αὑτόν.