耀眼 Origin — Dong Chinese Dictionary

yàoyǎn HSK7

dazzling

yào shine

Phonosemantic compound. 光 represents the meaning and 翟 represents the sound.

光 Meaning component

guāng light

翟 Sound component

dí, zhái a kind of pheasant

Change in sound

耀 and 翟 don't sound similar in modern Mandarin due to historical phonetic changes. They were more similar in Old Chinese.
耀 *lewk-s
翟 *lˤewk

	Middle Chinese	Old Chinese	Gloss
Baxter-Sagart	yewH	lewk-s	shine

Phonosemantic compound. 目 represents the meaning and 艮 represents the sound.

目 Meaning component

mù eye

艮 Sound component

gěn, gèn, hén blunt

Regular Modern

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	Middle Chinese	Old Chinese	Gloss
Baxter-Sagart	ngonX	ŋˤə[n]ʔ	protrude as a knob
	ngeanX	[ŋ]ˤ<r>ə[n]ʔ	eye

《說文》：“眼，目也。从目，聲。”