redoutable
/ʁə.du.tabl/
1.
adjectiveSing
formidable; inspiring fear or great respect
very effective (figurative)
C'est un adversaire redoutable sur le terrain : on ne le sous-estime jamais.
He is a formidable opponent on the field; you never underestimate him.
Synonyms:formidable, impressionnant, efficace
