a small brightly coloured fish found in shallow tropical seas, of the family Apogonidae , the male of which often broods eggs in its mouth

a deep , vivid red colour

If you describe an action as a cardinal sin , you are indicating that some people strongly disapprove of it.

any of various large N temperate beetles of the family Pyrochroidae, such as Pyrochroa serraticornis, typically scarlet or partly scarlet in colour

An error is something you have done which is considered to be incorrect or wrong , or which should not have been done.

a campanulaceous plant, Lobelia cardinalis of E North America , that has brilliant scarlet , pink , or white flowers

any of the four bodily fluids (blood, phlegm , choler or yellow bile , melancholy or black bile) formerly thought to determine emotional and physical disposition

A cardinal number is a number such as 1, 3, or 10 that tells you how many things there are in a group but not what order they are in. Compare → ordinal number .

The cardinal points are the four main points of the compass , north , south , east , and west .

the four main points of the compass : north, south , east , and west

a large house spider , Tegenaria parietina

anything considered to be an important or characteristic virtue

a set of theoretical vowel sounds, based on the shape of the mouth needed to articulate them, that can be used to classify the vowel sounds of any speaker in any language

any of various mostly tropical American buntings, such as the cardinal and pyrrhuloxia , the males of which have brightly coloured plumage

the most important moral qualities, traditionally justice , prudence , temperance , and fortitude

You can refer to the amusing things that people say as their humour .