What is the meaning of ?

The hiragana syllable (i). Its equivalent in katakana is (i). It is the second syllable in the gojūon order; its position is (a-gyō i-dan, row a, section i).

Used in compounds with certain sentence-ending particles to create a familiar effect.

Used in compounds with certain sentence-ending particles to create an exclamatory effect.

Used after verbs to create an exclamatory effect.

emphatic subject marker, added to nouns and verb stems

emphatic phrase-final particle, emphasizing preceding phrase

suffix forming adjectives: -ic; -al

attaches to verbs and adjectives. Further details are uncertain. The derived terms do not appear to have any difference in meaning than their original terms.

attaches to nouns to give a special value

Source: wiktionary.org