11
votes
2answers
592 views

Rules for emphasizing by lengthening sounds

Sometimes, sounds are lengthened for emphasis. For example, see "とっても versus とても". What are the rules governing this process? Are there restrictions on where lengthening can be inserted? とっても or ...
29
votes
4answers
1k views

How did “little tsu” become a lengthener?

How did it come about historically that っ preceding a sound would geminate it? Is it really a little つ or are they just near homomorphs?