Where does “nečlenství” come from?

nečlenství (Czech) comes from Czech členství, from Czech -ství, from Old Czech -stvie, from Old Czech -stvo, from Proto-Slavic -ьstvo, from Proto-Balto-Slavic -istwas.

nečlenství (Czech): nonmembership

Definitions

nonmembership

Ancestry of “nečlenství”, step by step

nečlenství traces back through two separate lines of ancestry.

via Czech členství

Step	Language	Word	Meaning
1	Czech	členství	membership
2	Czech	-ství	A suffix, akin to -ship and -hood
3	Old Czech	-stvie	A noun-forming suffix: -ship, -hood
4	Old Czech	-stvo	A noun-forming suffix
5	Proto-Slavic	-ьstvo	Deadjectival, forming nouns denoting a condition...
6	Proto-Balto-Slavic	-istwas	—

via Czech ne

Step	Language	Word	Meaning
1	Czech	ne	no!; not
2	Old Czech	ne	Negation particle; no, not
3	Proto-Slavic	ne	not
4	Proto-Balto-Slavic	nē	not
5	Proto-Indo-European	né	not; no

Every word from Proto-Balto-Slavic -istwas →Every word from Czech -ství →Every word from Proto-Slavic -ьstvo →