AN-4

('an' in the fourth tone)

There are 28 standard Chinese characters with an 'an' pronunciation. Sound-indicating cmponents of more complicated characters are: 安 (9 occurences), 音 (5 occurences, even though 音 by itself is spoken 'yin(1)', not 'an' in any tone), 奄 (6 occurences, even though 奄 by itself is spoken 'yan(3)', not 'an' in any tone)

暗 = an(4) = secret, dark

The right part of the character is: 音 = yin(1) = sound; the same 音 that is part of the word 拼音 = Pin(1)yin(1) = Pinyin, the alphabetic writing system for Chinese

暗恋 = an(4) lian(4) = to love secretly

Sample sentence from a Chinese lifestyle advice site:

19岁我暗恋一位老男人. = Shi()jiu(3) sui(4) wo(3) an(4) lian(4) yi(1) wei(4) lao(3) nan(2)ren(2). = At the age of 19, I secretly love an old man.