When forming certain cases, i.e. the genitive and partitive singular, it is occasionally difficult to tell whether a noun's final i changes into -e or not. Here is a list of words grouped by whether or not their final i changes into -e.

NB. Words that keep the -i are usually loans from some other language. To make matters more complicated, older loans may follow the i ~ -e pattern, but the older loans are, in general, difficult to recognize.  In addition, there are various adverbs, prepositions, postpositions, etc. that may look like nouns ending in -i, but in fact are not, and do not conjugate at all.

• Nouns and adjectives whose final i changes into -e.
• Nouns and adjectives whose final i doesn't change.
• Words that look like they should conjugate but don't (and ones that I don't know how they conjugate!)

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