основательный

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Russian

Etymology

основа́ть (osnovátʹ) +‎ -тельный (-telʹnyj)

Pronunciation

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Adjective

основа́тельный (osnovátelʹnyj) (comparative (по)основа́тельнее or (по)основа́тельней)

  1. well-grounded, well-founded
    основа́тельный до́водosnovátelʹnyj dóvodwell-grounded argument
  2. solid, sound, thorough, substantial
    Synonym: обстоя́тельный (obstojátelʹnyj)
    основа́тельный челове́кosnovátelʹnyj čelovéksolid man
    основа́тельное изуче́ниеosnovátelʹnoje izučénijethorough study
  3. stout, solid
  4. (colloquial) bulky

Declension

Derived terms