Description:

The related terms 'akki' (older sibling), 'itti' (younger sibling), 'kawan' (twin), 'siplin' (sibling in general) are all words for brothers and sisters. These words are used almost excludively as nouns and not verbs.

Both akki and itti are very popular to use with intrinsic gender prefixes. Lijákki, cejákki, litti and cejítti are commonly attensted. This type of usage is attested back to the middle period.

Since the early modern period, akki and itti have also become popular head terms for formal address, with 'akki' used for a social superior and 'itti' for a social inferior, but both considered polite. A typical interaction might ber in customer service, if the ages of the people interacting are not drastically different, where the customer may be addressed as 'akki' and the service person as 'itti'. The genered forms are not typically used in this context, unless the speaker especially wishes to call attention to gender, such as in the context of prostitution.

The word 'siplin' was borrowed from English, from 'sibling', during the early modern period to serve as a technical term for siblings regardless of age. It is not much used outside of technial contexts. If someone wants to speak of both older and younger siblings, it is more common to hear 'akki pi itti'.

The word 'kawan' means 'twin', and is derived from the number two. It might also be used for other multiple birth scenarios, such as for a triplet, despite being based on the word for two. If needed to disambiguate, 'identical twin' is 'winys kawan', with the modifier 'winys' derived from the term 'win', 'self', and fraternal twin is 'ik winys kawan'.