It will be seen from the foregoing examples, that all “particles of specialisation” and formative particles and suffixes were originally deictic words or elements.

Enunciative ‘u’

     A short u is appended to some verbal themes ending in a nasal or liquid, when they are conjugated through the present and future tenses, as a help to enunciation.

     e.g. e- (to count, to consider, etc.)-e––ukiŠƒn, he counts,    etc., e––uvƒn, he will count, etc.

     a˜ (to take up in the hollow of both hands)-a˜˜ukiŠƒn he takes up..........., a˜˜uvƒn, he will take up...........hands.

Vocalizing or Vocalic ‘u’

When a final nasal or liquid changes into a hard consonant, that hard consonant is followed by the vowel u, in consequence of its being difficult for Tamilian organs of speech to pronounce a final hard consonant without the help of a succeeding vowel.

e.g. k†–-k†du, to curve, to become crooked.

nan-naŠu, good, fragrant.

mel-medu, soft.

o˜ir-o˜iŠu, to shine.

This rule partially applies also to cases, in which the final ˜ or ‰ of a short monosyllabic word changes into ‰ or r there being no restriction to the following vowel.

e.g. ku˜-ku‰i, hole, pit.

ko˜ kombu-ko‰ukombu, stick or pole for supporting a creeper.

mu˜-mul_ai, to bore.

pal-paru, to become bulky.

ka˜-karu, to become black.

kari, charcoal, lit, that which is black.

The process of Addition involves that of Mutation also in many cases.