adj.

First in time or importance

n.

A prime minister or head of state 

n.

An archbishop or bishop who ranks highest among others.

A member of the order of animals that includes monkeys, apes, and humans.

Prime

n.

First in rank, excellence, quality, importance, or time.

adj. Chief; most important 

adj.

Belonging to the first ages; ancient

adj.

Primeval; origonal; fundamental. 

adj.

Situated behind or at the back. 

 Antonym anterior

n.

1. Future generations.

2. A person's descendants 

Posthumous

adj.

Occuring or continuing after death, especially a work published after the author's death or a child born after the father's death.