frightful russian

• стра́шный

  scary, frightening, terrifying, fearsome

  terrible, awful, dreadful, frightful

  ugly, hideous

• а́дский

  hellish, infernal, frightful, awful

• ужа́сно

  terribly, awfully, dreadfully

  horribly, frightfully, appallingly

• а́дски

  infernally, frightfully, terribly, awfully

Examples

• Высо́кий проце́нт кислоро́да позволя́ет насеко́мым выраста́ть до угрожа́ющих разме́ров.

  The high percentage of oxygen allows insects to grow to frightful sizes.

• Э́то ужасно дорого.

  It is frightfully expensive.