在居

Etymology
Modern pronunciations resulted from lenition of and irregular evolution of.

Alternatively considers the second character to be cognate of the written form  found in late imperial Northern Wu literature.

Verb

 * 1) to be at, to be in

Preposition

 * 1) at; in

Usage notes
This orthography is an etymological spelling that can be applied to all lects. However, its usage may be limited, and phonetic spellings, such as, , may be preferred instead.