Is 門 read as かど or もん?

Question

Is it more common to read 門 as かど or もん?

e.g. how would we pronounce the 門 in 彼らは門が開くのを待っていた。

Answer 1

When the kanji character 門 is used as a noun in itself (meaning a gate), it is usually read as もん, although it was also read as かど in older time. As other people say, 門 in your example should be read as もん in the modern Japanese.

The most common example of 門 read as かど in the modern Japanese that I can think of is a proverb 笑う門には福来る (わらうかどにはふくきたる). This 門 is read as かど and means a house. The literal meaning of the proverb is “Happiness comes to a home where family is laughing.” Progressive Waei Chū Jiten suggests two translations of this proverb: the more literal one is “Fortune favors cheerful homes,” and the less literal one is “Laugh and grow fat.”

Answer 2

I think that もん is the word you mean, and かど is used mostly (only?) in names.

Answer 3

I think もん is Chinese reading and かど　is Japanese reading .

You would found かど is usually used for the Classic Movies

for example...

みかど(mikado)「御門」

かどまつ(kadomatu)「門松」

かどで(kadode)「門出」

かどうき(kadowaki)「門脇」（name）