Antonyms of adj frightful

3 senses of frightful

Sense 1
atrocious, frightful, horrifying, horrible, ugly -- (provoking horror; "an atrocious automobile accident"; "a frightful crime of decapitation"; "an alarming, even horrifying, picture"; "war is beyond all words horrible"- Winston Churchill; "an ugly wound")

INDIRECT (VIA alarming) -> unalarming -- (not alarming; assuaging alarm)

Sense 2
frightful, terrible, awful, tremendous -- (extreme in degree or extent or amount or impact; "in a frightful hurry"; "spent a frightful amount of money")

INDIRECT (VIA extraordinary) -> ordinary -- (not exceptional in any way especially in quality or ability or size or degree; "ordinary everyday objects"; "ordinary decency"; "an ordinary day"; "an ordinary wine")

Sense 3
fearful, frightful -- (extremely distressing; "fearful slum conditions"; "a frightful mistake")

INDIRECT (VIA bad) -> good -- (having desirable or positive qualities especially those suitable for a thing specified; "good news from the hospital"; "a good report card"; "when she was good she was very very good"; "a good knife is one good for cutting"; "this stump will make a good picnic table"; "a good check"; "a good joke"; "a good exterior paint"; "a good secretary"; "a good dress for the office")

Similarity of adj frightful

3 senses of frightful

Sense 1
atrocious, frightful, horrifying, horrible, ugly -- (provoking horror; "an atrocious automobile accident"; "a frightful crime of decapitation"; "an alarming, even horrifying, picture"; "war is beyond all words horrible"- Winston Churchill; "an ugly wound")
       => alarming (vs. unalarming) -- (frightening because of an awareness of danger)

Sense 2
frightful, terrible, awful, tremendous -- (extreme in degree or extent or amount or impact; "in a frightful hurry"; "spent a frightful amount of money")
       => extraordinary (vs. ordinary) -- (beyond what is ordinary or usual; highly unusual or exceptional or remarkable; "extraordinary authority"; "an extraordinary achievement"; "her extraordinary beauty"; "enjoyed extraordinary popularity"; "an extraordinary capacity for work"; "an extraordinary session of the legislature")

Sense 3
fearful, frightful -- (extremely distressing; "fearful slum conditions"; "a frightful mistake")
       => bad (vs. good) -- (having undesirable or negative qualities; "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice")

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