Where does “cavityless” come from?

cavityless (English) comes from English cavity, from Middle French cavité, from Latin cavitas, from Latin cavus, from Proto-Italic kawos, from Proto-Indo-European ḱowh₁ós, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

cavityless (English): Without a cavity or cavities

Definitions

Without a cavity or cavities

Ancestry of “cavityless”, step by step

cavityless traces back through two separate lines of ancestry.

via English cavity

Step	Language	Word	Meaning
1	English	cavity	A hole or hollow depression; A hollow area within...
2	Middle French	cavité	—
3	Latin	cavitas	cavity
4	Latin	cavus	hollow, concave; excavated, channeled;...
5	Proto-Italic	kawos	—
6	Proto-Indo-European	ḱowh₁ós	hollow
7	Proto-Indo-European	ḱewh₁-	to swell; to be strong

via English less

Step	Language	Word	Meaning
1	English	less	To a smaller extent or degree; comparative form...
2	Middle English	les	false; lying; deceptive; falsehood; a lie
3	Old English	lēas	false, lax; false, void, loose; devoid of, loose...
4	Proto-Germanic	*laus	—

Every word from Proto-Indo-European ḱewh₁- →