upbreak

up- +‎ break

upbreak (third-person singular simple present upbreaks, present participle upbreaking, simple past upbroke, past participle upbroken)

1. (intransitive) To break upwards; to force away or passage to the surface.

upbreak (plural upbreaks)

1. A break-up or division.
   • 1870, The British and Foreign Evangelical Review, volume 19, page 134:

     The most ignorant will be wiser than the wisest now is by the time these words can be published, but we think this anticipation is likely to be realised: the probability of upbreak in the "Church" itself increases as the hour of the meeting of the Council approaches.

2. A breaking upward or bursting forth; an upburst.
   • 1856, Elizabeth Barrett Browning, “Seventh Book”, in Aurora Leigh, London: Chapman and Hall, […], published 1857, →OCLC:

     the upbreak of the fountains of my heart

• break up, break-up, breakup