Pronunciation: [kˈʌlələs] (IPA) 
The word "colourless" is spelled with the British English spelling, which includes an extra "u" before the "o". It is pronounced /ˈkʌlələs/, with the stress on the first syllable. The "o" and "u" in the middle of the word are pronounced as a single sound, like the "ou" in "house". The final "e" is silent. The word means "without color" and is often used to describe something that is dull or lacks brightness.
The term "colourless" is an adjective that describes the absence or lack of color. It refers to something that does not possess any hues, indicating that it is devoid of pigments or chromatic attributes. The word can be used in various contexts, such as describing substances, objects, or even ideas that do not exhibit any visible shades or tints.
In the realm of physical objects, colourless typically refers to transparent or translucent materials that allow light to pass through them without any alteration in the spectrum. For instance, water and glass are often considered as colourless substances because they are transparent and do not display any specific coloration. Similarly, air is often regarded as colourless since it does not possess any noticeable hue.
Colourless can also be used metaphorically to describe concepts or emotions that lack vividness, liveliness, or distinction. In this sense, it implies a sense of dullness, monotony, or lack of enthusiasm. For example, a colourless performance refers to a lackluster or uninspiring presentation, while a colourless personality signifies a lack of charisma or individuality.
Furthermore, the term can be used to describe individuals who are considered unremarkable, characterless, or lacking impact. It denotes a person whose presence does not leave a strong impression or exhibit any distinctive qualities.
Overall, the term "colourless" captures the absence of color in a literal or metaphorical sense, conveying the idea of something being devoid of chromatic hues, vitality, or distinction.
Destitute of colour; transparent; water-colours, colours mixed with gum-water or a size, and not with oil.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "colourless" is derived from the combination of two elements: "colour" and the suffix "-less".
The term "colour" derives from the Old French word "color", which came from the Latin word "color". The Latin word originally meant "covering" or "skin" and later evolved to refer to the hue or appearance of something.
The suffix "-less", on the other hand, originated from the Old English word "-leas". It is used to negate or indicate the absence of what is specified by the root word. In the case of "colourless", the suffix "-less" indicates the absence of color.
Therefore, combining the root word "colour" and the suffix "-less" creates the word "colourless", meaning without color.
