Haiku such as "kyo" () may look like two syllables to English speakers but are in fact a single "on" (as well as a single syllable) in Japanese. In 1973, the Haiku Society of America noted that the norm for writers of haiku in English was to use 17 syllables, but they also noted a trend toward shorter haiku. Shorter haiku are very much more common in 21st century English haiku writing. Some translators of Japanese poetry have noted that about 12 syllables in English approximate the duration of 17 Japanese "on". Also in translations four lines is more appropriate for
Japanese poetry are a short, 3-line verse form, which have achieved significant global popularity, and the haiku form has been adapted from Japanese into other languages. Typical of the haiku form is the metrical pattern of 3 lines with a distribution of 5, 7, and 5 "on" (also known as morae) within those lines. Other features include the juxtaposition of two images or ideas with a "kireji" ("cutting word") between them, and a "kigo", or seasonal reference, usually drawn from a "saijiki", or traditional list of such words. Much of Japanese poetry has been transmitted historically through published anthologies, many of them