first off

blink first

To be the first party in some situation to give in or back down.

cast the first stone

To act self-righteously in accusing another person, believing oneself to be blameless.

come first

To win first place in a competition.

director of first impressions

A receptionist.

feet first

In the manner of a deceased person (i.e., dead).

first among equals

A person or position that is formally of equal rank to others in a group, but nonetheless takes a leading role within that group.

first and last

A person's combined given name and surname.

first annual

Being the first occurrence of an event that is scheduled or hoped to become annual.