Anagrams of: SPELEOLOGICAL

• the study of (especially prehistoric) antiquities

• Any organism that lives in the open sea rather than in coastal or inland waters.

• thin protective membrane in some protozoa

• any of a series of triclinic feldspars that form rocks

• a musical instrument consisting of a series of steam whistles played from a keyboard

• (Greek mythology) the Muse of epic poetry

• an abrupt failure of function or complete physical exhaustion

• a natural event caused by something suddenly falling down or caving in

• the act of throwing yourself down; collapse; sink

• a sudden large decline of business or the prices of stocks (especially one that causes additional failures)

• break down, literally or metaphorically

• collapse due to fatigue, an illness, or a sudden attack

• fold or close up

• fall apart

• cause to burst

• suffer a nervous breakdown

• lose significance, effectiveness, or value

• defend, explain, clear away, or make excuses for by reasoning

• acknowledge faults or shortcomings or failing

• surpassing what is common or usual or expected