Fettle means to live in proper conditions. It could also refer being in a stable mental or emotional state. It is derived from the Middle English word fetlen, which means to make ready and also from the Old English word 'fetel, which means girdle. It is also referred to as a state of fitness as well as good health. It is generally referred to as good condition, good shape, physical fitness, fitness.
In English the famous term that is used is "in fine fettle". In terms of biology it refers to the amount to which a creature is personalized to. It also refers to the way the creature produces offspring in a meticulous environment.
In English the famous term that is used is "in fine fettle". In terms of biology it refers to the amount to which a creature is personalized to. It also refers to the way the creature produces offspring in a meticulous environment.