fiendish's Usage Examples:

The fiend who did that is still out there; the one who killed those children and police officer and God knows who else!Great game and reminiscent of In Memoriam, tho not quite so fiendish, but a shared thread of the Sol Invictus.

About twenty kids, and a proportionate number of mothers were playing some fiendishly complicated party game on the grass.

It has fastened on the family on account of the cruelties perpetrated by Vlad Drakul (1433-1446) and Vlad Tsepesh (1456-1476), who figure in popular legend as representatives of the most fiendish cruelty.

Their most futuristic effort, yet quintessentially fiendish, it flowed and feinted with a seamless sense of cool.

delve into the delightfully dark underworld of Holmes, Watson and their fiendish foes.

Sudoku is the fiendishly addictive number.

Shortly afterwards, with his vanity and love of popularity inflamed, he pandered to the passions of the lower orders by the publication of his Discours de la lanterne aux Parisiens which, with an almost fiendish reference to the excesses of the mob, he headed by a quotation from St John, Qui male agit odit lucem.

The results will be so frightfully good, you may want to indulge in the festive fare, too!Characterisation has never been so much frightfully fiendish fun!You never know what frightfully good music you might discover.

fiendish device, provided to drag one or two persons up the slope before skiing down.

WORKING out how much money you will have in retirement is fiendishly complicated.

to be good at Sudoku!elegance into fiendishly difficult puzzles.

Seagoon: The fiendish steamroller driver of Regent Street.

For revenge, Archimedes devised a fiendish computational problem that involved truly immense numbers.

Synonyms:

satanic, unholy, diabolic, demonic, evil, hellish, infernal, diabolical,

Antonyms:

moral, pleasant, supernal, blessed, good,