Difference between Ugly and Frightful

UGLY vs FRIGHTFUL: NOUN

An ugly person or thing.
One that is ugly.
Ugliness
A shade for the face, projecting from the bonnet.
Pl. uglies (-liz). An ugly person.
A shade for the eyes worn as an appendage to the bonnet by women about the middle of the nineteenth century. It was generally of the character of a calash, but smaller. See sunshade .

Marked by or inclined to anger or bad feelings; disagreeable.
Likely to cause embarrassment or trouble.
Threatening or ominous.
Morally reprehensible; bad.
Rude.
Repulsive or offensive; objectionable.
Displeasing to the eye; unsightly.
Threatening or foreshadowing evil or tragic developments
Provoking horror
Inclined to anger or bad feelings with overtones of menace
Morally reprehensible
Displeasing to the senses and morally revolting
Unmanageable. Used of animals, especially cows or horses.
Deficient in beauty
Offensive to one's sensibilities or morality.
Displeasing to the ear or some other sense.
Displeasing to the eye; not aesthetically pleasing.
Unpleasant; disagreeable; likely to cause trouble or loss.
Offensive to the sight; contrary to beauty; being of disagreeable or loathsome aspect; unsightly; repulsive; deformed.
Displeasing to the senses

Synonyms Unsightly, homely, ill-favored, hard-favored, hideous.
Threatening painful or fatal consequences; dangerous: as, an ugly blow; an ugly cut.
Ill-natured; cross-grained; quarrelsome; ill-conditioned.
Disagreeable; offensive; suggestive of or threatening evil; associated with disadvantage or danger: as, an ugly rumor of defeat.
Morally repulsive or deformed; hideous; base; vile.
Unpleasing or repulsive in appearance; offensive to the sight; of very disagreeable aspect.
To make ugly; disfigure; uglify.
Cross, sulky, morose, ill-tempered, crabbed.

Synonyms Dreadful, Fearful, etc. (see awful); alarming, terrific, horrible, shocking.
Full of terror; fearful; alarmed.
Intolerable; shocking; hideous.
Full of occasion for fright; causing or apt to excite alarm or terror; terrible; dreadful: as, a frightful chasm; a frightful tempest.

Despicable, Monstrous, Alarming, Vile, Unaesthetic, Ominous, Unlovely, Horrifying, Repulsive, Grotesque, Frightful, Atrocious, Unsightly, Horrible, Hideous

Dreadful, Scary, Hideous, Frightening, Ghastly, Terrifying, Extraordinary, Alarming, Fearful, Atrocious, Bad, Ugly, Horrible, Terrible, Horrifying

Despicable, Monstrous, Alarming, Vile, Unaesthetic, Ominous, Unlovely, Horrifying, Repulsive, Grotesque, Frightful, Atrocious, Unsightly, Horrible, Hideous

Dreadful, Scary, Hideous, Frightening, Ghastly, Terrifying, Extraordinary, Alarming, Fearful, Atrocious, Bad, Ugly, Horrible, Terrible, Horrifying

The large room was hot, black ugly cricket.
He has no fear of ugliness, but he cultivates the ugly because it is the real, not the real because it is the ugly.
The original ugly Christmas sweater brand with funny Christmas sweaters for men, Chanukah sweaters, and ugly Christmas sweaters for men.
When this album is bad and ugly, it gets really really bad and ugly!
It was an ugly game and when the game turned ugly, I turned the ugliest.
She chooses Hulga as her new name because she believes that is a very ugly name, and fit for her ugly physical appearance.
This should be my long stay visa to France: the ugly, the ugly, and the very, very bad.
The question was, will ugly Jerry and ugly Tom help their respective, more attractive, brothers?
Meaning: An ugly thing will remain ugly even if its appearance is taken care of.
Capitalism in China is an ugly, ugly thing.

And this issue can come on with frightful frequency.
Brown, Horrible Histories: The Frightful First World War, pg.
Frightful First Experiments kit has lots to satisfy curiosity.
What frightful errors are contained in those few lines!
You seem gasping with horror at some frightful supposition.
Tauros a frightful powerhouse to be reckoned with.
Horror series reboot thrills with tense, frightful story.
"How beautiful by contrast with this frightful forest.".
Multiattack: The dracolich can use its Frightful Presence.
The Old Testament tells us the frightful things that God has done, the New the frightful things that he will do.