spring
intransitive verbTo move upward or forward in a single quick motion or a series of such motions; leap.
intransitive verbTo move suddenly, especially because of being resilient or moved by a spring.
intransitive verbTo start doing something suddenly.
intransitive verbTo appear or come into being quickly.
intransitive verbTo issue or emerge suddenly.
intransitive verbTo arise from a source; develop: synonym: stem.
intransitive verbTo extend or curve upward, as a rafter or arch.
intransitive verbTo become warped, split, or cracked. Used of wood.
intransitive verbTo move out of place; come loose, as parts of a mechanism.