avalanche-like russian

• лави́нный

  avalanche (as in 'avalanche danger'), of an avalanche

  avalanche-like, massive, immense, torrential

• лавинообра́зный

  avalanche-like, exponential, rapidly increasing

Examples

• Войско наступало неодолимо, как лавина.

  The army advanced inexorably like an avalanche.