Adverbial forms of adjectives occur in identity statements with copula Éç iru . Contrast:
These two columns differ in meaning; the sentences with nominalized adjectives mean `habitually (so-and-so)' while the sentences with adverbial È Éç -aa iru- mean `temporarily, at the moment (so-and-so)'. Or, it can mean that something has recently become or attained the state in question: Éâ ¶ÀÕ idu sari `This is all right, this is permanently all right' versus Éâ ¶ÀÕ¿Ô Éç¡Þ idu sariyaa irukku `This is all right NOW, at the moment (but it wasn't before)'.
With certain noun phrases marked with È Éç aa iru the meaning may be `temporarily serving as, functioning as', e.g. Éâ ÂÞ¤ä ¶Ô×Á, ÈÆÔ É¤½ È¤½ÖöÔ Éç¡Þ idu vahuppu saale, aanaa ippa aaffiisaa irukku `This is (usually) a classroom, but now it's (serving as) an office.'