Synonym: difficult, hard, rough, rugged, tough. Similar words: able, cable, table, enable, unable, be able to, affable, tableau. Meaning: ['fɔrmɪdəbl /'fɔːm-] 
adj. 1. extremely impressive in strength or excellence 2. inspiring fear.
adj. 1. extremely impressive in strength or excellence 2. inspiring fear. 
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(31) My tennis is really improving - I've got a formidable two-handed backhand.
(32) He was one of the most formidable intellects of his time.
(33) He combined a formidable intellect with a talent for speaking.
(34) They faced formidable difficulties in their attempt to reach the mountain summit.
(35) Men found her formidable.
(36) Russia still has a formidable nuclear arsenal.
(37) Thereafter it evolved rapidly into a formidable force.
(38) Not surprisingly, this approach met with formidable operational difficulties.
(39) It's a deal considering the formidable size.
(40) Manchester United will prove a formidable opponent this season.
(41) It was a formidable and extremely expensive task.
(42) There he was a formidable force.
(43) Other status groups erect less formidable barriers to entry.
(44) A formidable opponent, I suspect.
(45) They were organised and formidable teams before its formation.
(46) She was above all a most formidable female.
(47) This arboreal lizard is a formidable predator.
(48) There are of course formidable difficulties to be overcome.
(49) Chess posed a formidable challenge for computer scientists.
(50) In the House, the task is more formidable.
(51) MacArthur's guard was a formidable force.
(52) He looked taller, more formidable, more patrician.
(53) Carter turns out to be formidable, commanding and a real stage actress.
(54) To begin with, these forces have created the most formidable barrier to animal movement on earth.http://sentencedict.com
(55) Wings bigger and blacker and more formidable than any he had yet seen.
(56) They watched with grave concern the formidable ascent of U2.
(57) It was well fitted out, with a formidable medicine chest.
(58) The real challenge will be to attract an audience and advertisers against formidable rivals.
(59) The list of prescribed topics may look formidable, but not all need to be covered in depth.
(60) Builth Castle Formidable earthworks remains of a substantial motte and bailey.
More similar words: able, cable, table, enable, unable, be able to, affable, tableau, vegetable, amenable, variable, bearable, disabled, reliable, suitable, agreeable, comparable, personable, on the table, available, favorable, remarkable, inevitable, vulnerable, acceptable, delectable, impeccable, insatiable, changeable, tablespoon.