Keyword
prolong
Info
FrequencyTop 1200-1300
Type
Kyōiku (6th grade) 
?
KankenLevel 5
Heisig419
Readings
(51%)
えん
(47%)
Composed of
slash left
stop
long stride
Used in kanji (6 in total)
birth
drool
straw mat
???
serpentine
???
Used in vocabulary (187 in total)
to survive; to live long
forever; endlessly; on and on; meandering; wandering; winding
extension; elongation; prolongation; Enchō era (923.4.11-931.4.26)
Examples (126 in total)
I could go on and on about it, but I won't.
All forms of life have an instinctive urge to survive.
The game was postponed until next week.