When is 意外 ever read as 頭高?


I have always heard いがい{LHH}, いがいに{LHHH}, いがいと{LHHH}, but NHK日本語発音アクセント辞典
seems to list いがい{HLL} too, and the same goes for
[Wiktionary](https://en.wiktionary.org/wiki/%E6%84%8F%E5%A4%96). I wonder if
意外 is really pronounced that way. What about the adverbs 意外と and 意外に? Are they
ever 頭高?




意外 is not pronounced いがい{HLL} in modern standard Japanese.

And in fact, NHK日本語発音アクセント **新** 辞典 (2016) does not list it at all.

Only the first edition of NHK (1998) does, and its still listed second even
there.

It should go without saying, but you should not use resources from 25 years
ago for something as fluid as pitch accent.




意外 is not pronounced いがい{HLL} in modern standard Japanese.

And in fact, NHK日本語発音アクセント **新** 辞典 (2016) does not list it at all.

Only the first edition of NHK (1998) does, and its still listed second even
there.

It should go without saying, but you should not use resources from 25 years
ago for something as fluid as pitch accent.

