Inwardly the Second Men differed from the earlier species in that they had shed most of those primitive relics which had hampered the First Men more than was realized. Not only were they free of appendix, tonsils and other useless excrescences, but also their whole structure was more firmly knit into unity. Their chemical organization was such that their tissues were kept in better repair. Their teeth, though proportionately small and few, were almost completely immune from caries. Such was their glandular equipment that puberty did not begin till twenty; and not till they were fifty did they reach maturity. At about one hundred and ninety their powers began to fail, and after a few years of contemplative retirement they almost invariably died before true senility could begin.

The sentence was primitive, scraping its knuckles on the floor and grunting with heavy threats.

Lancelets are the most primitive chordates.

If you are a member of a primitive community and wish to produce food, for example, there are two things you must do.

In primitive societies barter was used.

When the boys go camping, they enjoy living in a primitive way.

He contends that primitive life once existed on Mars.

So many members of our civilized society would do well to live some time with a primitive people.

The anthropologist delivered a lecture on primitive cultures.

A difficult objective of Buddhistic philosophy is to liberate oneself from the undulations of emotions, which Buddhists perceive are primitive. An advanced entity liberates himself or herself from this imprisonment. One notes that Star Trek has incorporated such concepts in the fictional race of Vulcans.