irreversible

transit station

face front and lay down

upside down

reverse

to turn around, another way round; to invert; on the contrary

secretly changing something without the realization of others

to go around in circles

no alternative methods (spoken)

invert

inside-out; upside down [colloquial]

lit. flip over a pig's stomach, meaning one looks fine on the outside, but can turn ugly or show the real evil side in an instant

relationship turns sour instantly upon any disputes (slang)

two people are normally behaving well together, but once they have an argument, their attitude will become very bad; friends turning into enemies after a dispute

to turn right

to do an about turn; to turn back [written and colloquial]

to be pig-headed and lacking the ability to adapt [colloquial]

change one's mind

Basal transcriptional factor

a volte-face; a big turn

improve

(adjective) (linguistics) Euphemistic

indirectly

turn left

sharp turn

abruptly decline

literally: Pigeons make a turn, it means to take a quick stroll then return

to go out for a quick walk and come back; for car to spin in circles

to bouce back; to make a u-turn; to turn back [colloquial]

describes someone who is not smart enough to know how to be flexible and adapt to different circumstances, which is just another way to call someone stupid [colloquial]