strenuous russian

• впа́ивать

  solder

  impose punishment

  perform strenuous act toward someone

• загружа́ющий

  loading, downloading

  burdening, taxing, strenuous

• изнуря́ющий

  exhausting, grueling, debilitating, strenuous

• надсаживавший

  overstraining, overtaxing, strenuous, grueling

• надсаживающий

  overstraining, strenuous, exhausting

• натруживавший

  strenuous, fatiguing, exhausting, overstraining

  overworked, strained, fatigued (from exertion)

• перенапряга́ющий

  overstraining, strenuous, taxing, overworking

• уси́ленно

  strenuously, intensely, vigorously, assiduously, hard

• натужно

  with difficulty, strenuously, with effort, laboriously