"Втвърдявам" in Bulgarian is the translation of English "Toughen" (find more translations on these pages: "Toughen in Different Languages" and "Toughen in Bulgarian").

Втвърдявам pronunciation: If you want to know how to pronounce втвърдявам in Bulgarian (that is, how we say "Toughen" in Bulgarian), you will find the audio pronunciation below.

Please listen to the proper pronunciation and remember how to say it. We hope this will help you to master your Bulgarian language.

Here is the Bulgarian pronunciation of the word втвърдявам:
Bulgarian, female
In addition to the audio pronunciation, there is also Bulgarian transliteration available:

[vtvŭrdyavam]