earlier

occurring previously

I shall be late because I missed the earlier train.

I'd seen earlier (in the day).

To me it seems that extensive investment in relatively low-powered units may have the same ultimate result of motive power shortage as that which afflicts the London Midland Region today, and which has compelled the re-engining of some of the earlier multiple-unit diesel train sets.

Machine learning uses computer algorithms to teach machines to make independent decisions by learning from earlier or existing behavior.

Also a form of earlycomparative form of early: more early

previously; before now; sooner

From what I vaguely saw earlier this morning, when I had just woken up and was tidying my bed, a tall, bulky person left an unfamiliar box at my front door.

I shall be late because I didn't start earlier.

They were looking for some measuring equipment they had placed in the ice earlier.

Also a form of earlycomparative form of early: more early