WordNet: formidable

extremely impressive in strength or excellence; "a formidable opponent"; "the challenge was formidable"; "had a formidable array of compositions to his credit"; "the formidable army of brains at the Prime Minister's disposal"

• similar to impressive

formidable

• (englanti) formidability (derivationally related)
• (suomi) vaikuttava (synonyymi)

• (suomi) pelottava (synonyymi)