premièrement

Meaning

Numbers the points of a list, with no time nuance.

Position and punctuation

at the start of the sentence · a comma after

Example

Premièrement, le tarif ; deuxièmement, les horaires ; troisièmement, l'accès.

First, the price; second, the hours; third, access.

In the DELF

the B1 letter · the B2 oral presentation

The trap

The series holds to the end: premièrement calls for deuxièmement, not ensuite. Mixing the two series is immediately visible.