Farther along in physical or mental development.

Roget 282: advancing etc. v.; progressive, profluent^†; advanced.   

Comparatively late in a course of development.

Ahead of the times:
— The advanced teaching methods.
— Had advanced views on the subject.

synonyms: forward-looking, innovative, modern.

At a higher level in training or knowledge or skill.

Ahead in development; complex or intricate:
— Advanced technology.

synonym: sophisticated.

Far along in time:
— A man of advanced age.
— Advanced in years.

synonym: ripe.

of societies Highly developed especially in technology or industry.

Situated ahead or going before:
— At that time the most advanced outpost was still east of the Rockies.

synonyms: advance, in advance.