Japanese edit

For pronunciation and definitions of えんえん – see the following entries.
延々
[adjective] lasting for a very long time
[adverb] on and on
Alternative spelling
延延
蜿蜒
[adjective] meandering, winding
Alternative spellings
宛延, 婉延
(This term, えんえん, is the hiragana spelling of the above terms.)

(The following entries are uncreated: 煙炎, 奄々, 炎々, 湲々, 燄々.)