A complicated grammatical construction.
The regressive changes in the body occurring with old age.
The shrinking of an organ (such as the uterus) to a former size.
A cessation of development or progress despite intense inner competition.
An endofunction whose square is equal to the identity function; a function equal to its inverse.
Entanglement; a spiralling inwards; intricacy.
A state of increased competition for limited resources, requiring great effort to stay ahead.
The result or product of being straight.
The state or quality of being straight (especially in the sense of "heterosexual").