1
to exterminate;to eradicate;to wipe out;to put an end to
麻薬の密売は根こそぎ絶やさなければならない。
We must eradicate the drug traffic, root and branch.
2
to let (fire) go out;to let die (e.g. flowers);to run out of
Other forms
断やす 【たやす】 (search-only kanji form)