يا ترى more ugly /uglier؟

[ابو بيشو]

Nothing is more ugly than a street without trees. Is it grammatically correct to say "more ugly"?
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Yes, this is grammatical. Many two-syllable adjectives can form the comparative and superlative with either -er, -est or with more, most. In fact, the comparative/superlative with more, most is becoming more common.
See Comparatives and superlatives in the Archives for more.
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