adjective, literary - causing harm, destruction, or serious damage; deadly or ruinous
noun - something that causes great distress, trouble, or annoyance; a source of harm or ruin
noun - the activity of going under water with special equipment including an air bottle
noun - the state of being important, well-known, or easily noticed
noun - a deep cut or hole made in a surface
verb - to make a deep cut or hole in something, usually with a sharp object or by force
phrase - used as a polite response to thanks
verb - to change information or data into a secret code, so that only authorized people can read it
noun - the process of converting information or data into a code to prevent unauthorized access
adjective, formal - very attractive or charming in a mysterious or seductive way
adjective, British English, informal - not straight, level, or properly balanced; shaky or unstable
noun - a medical facility for long-term illness, often for rest and treatment of chronic conditions like tuberculosis
adjective - dealing with problems or situations in a practical and realistic way rather than relying on theories or ideals
noun - a base or support on which a statue, column, or object stands
adverb, dated - three times