Where does “ennaltaehkäisy” come from?

ennaltaehkäisy (Finnish) comes from Finnish ehkäisy, from Finnish ehkäistä, from Finnish ehkä, from Proto-Finnic ehkä — perhaps, maybe.

ennaltaehkäisy (Finnish): prevention the act of preventing; activity intended to prevent something from happening at all or at least mitigating its effects before it happens

Definitions

prevention the act of preventing; activity intended to prevent something from happening at all or at least mitigating its effects before it happens

Ancestry of “ennaltaehkäisy”, step by step

ennaltaehkäisy traces back through two separate lines of ancestry.

via Finnish ehkäisy

Step	Language	Word	Meaning
1	Finnish	ehkäisy	prevention; contraception; When used as modifier...
2	Finnish	ehkäistä	To prevent, keep from occurring, avert, block,...
3	Finnish	ehkä	perhaps, maybe; although, though
4	Proto-Finnic	ehkä	perhaps, maybe

via Finnish ennalta

Step	Language	Word	Meaning
1	Finnish	ennalta	beforehand
2	Finnish	-lta	forms the ablative case
3	Proto-Finnic	-lta	Ablative case ending

Every word from Proto-Finnic ehkä →Every word from Finnish ehkä →Every word from Finnish ehkäistä →