(idiomatic) An event that increases the likelihood of or causes further failure.

Lacking worldly experience, wisdom, or judgement; unsophisticated. / Not having been exposed to something.

A naive person; a greenhorn.

(US, slang, rare) To do something that is impossible or very difficult, with connotations of pointlessness.

A name that systematically designates a well-defined group of entities.

(chemistry) A systematic name for an element, derived from the digits of its atomic number to which the suffix -(i)um is appended; normally only used for transuranic elements before or for a short period after they have been created, after which they will be given a non-systematic name.

(Internet) A unique, case-insensitive name that identifies a realm of administrative autonomy, authority or control within the Internet.

Clothing of a particular style and colours worn to represent a country at international events, or as part of national celebrations.

(Christianity) A name given usually by a pastor to a confirmand during a confirmation ceremony in various Christian denominations.

The original last name of a person, usually a woman, who has changed their last name upon marriage.