Which words can be pronounced as either -aai or -awai?


Some speakers of Japanese pronounce 場合【ばあい】 as ばわい. Do those speakers also
pronounce similar /Caai/ words like 他愛【たあい】 and 間合い【まあい】 differently? (I've
seen たわいない listed as an alternate reading for 他愛ない, but not たわい for 他愛.)

I can't think of any longer words that have -aai(-), but if there are any,
would people who say ばわい also pronounce those words with -awai(-)?




Such 'ai-to-wai' euphonic changes seem to be, to some extent, common in
Japanese.

<http://oshiete.goo.ne.jp/qa/7623826.html>

However, I'm afraid I really don't know whether someone around me is
pronouncing 他愛 as たわい, 具合 as ぐわい, etc. As a native Japanese speaker, I think I
can't even notice such 'ai-to-wai' euphonic changes in daily conversations.
Someone more sensitive than me might have a different impression about this.

One exception I can think of is Japanese family name 河合, which is definitely
pronounced "かわい", and its correct furigana is even かわい.

(To make sure, correct furigana of 場合 is always ばあい, no matter how some people
pronounce this differently.)

**EDIT:**

I pronounced "具合わるい" or "場合わけの計算" quickly for several times, and to my
surprise, I found myself unconsciously inserting trace "w" sound before '-ai'!

