1 causing death: a deadly poison.
az: ölümcül
ru: смертельный
2 very great: He is in deadly earnest (= He is completely serious).
az: tam, olduqca
ru: предельно серьёзный
3 very dull or uninteresting: What a deadly job this is.
az: cansıxıcı
ru: предельно скучный
♦ adverb
extremely: deadly dull; deadly serious.
az: olduqca, son dərəcə
ru: чрезвычайно