Definition: stand up on the hind legs, of quadrupeds
Usage: The horse reared in terror
Similar words: straighten
Definition: get up from a sitting or slouching position
Usage: The students straightened when the teacher entered
Synonyms: come up, surface, rise, rise up
Definition: come to the surface
Definition: travel up, "We ascended the mountain"
Usage: go up a ladder; The mountaineers slowly ascended the steep slope
Synonyms: rise, rise up, rebel, arise
Definition: take part in a rebellion; renounce a former allegiance
Similar words: dissent, resist, protest
Definition: express opposition through action or words
Usage: dissent to the laws of the country