Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Language: Latin
Origin: formidabilis, from formido 'fear'

formidable

adjective
     
for‧mi‧da‧ble
1 very powerful or impressive, and often frightening:
The building is grey, formidable, not at all picturesque.
The new range of computers have formidable processing power.
2 difficult to deal with and needing a lot of effort or skill
formidable task/challenge
the formidable task of local government reorganization
formidably adverb

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