It denotes an opposite of the initial meaning. So credible means believable, putting 'in' with it makes it unbelievable.
The prefix "in" in words like incredible or insoluble means "not" or "opposite of." It is used to create a negative meaning when added to the beginning of a word.
It means, "Incredible; I don't have words."
Some prefix words that mean four include "quad," "tetra," and "quadr-".
capture, captive, capsule
decagon decagons
ible is not a prefix, its a suffix (used at the end of a word/term) Words misspelled with -able Reproducible Words misspelled with -ible Indispensable
It means "not". Something in-credible is not able to be believed, and in-soluble cannot be dissolved.
There is no by- prefix. Perhaps what was mean was be-. Some words starting with this are because, belittle, berate, etc.
It means, "Incredible; I don't have words."
Some prefix words that mean four include "quad," "tetra," and "quadr-".
descend
The prefix dis- in words like disappoint and disappear means "not" or "opposite of." It is used to indicate a negative or reversing meaning to the root word that follows it.
"Culpable" means deserving of blame or censure. "Culpability" refers to the state of being responsible for a fault or wrong act.
The prefix "agon" comes from the Greek word "agon," meaning contest or struggle. It is often used in words related to competition or conflict, such as "agony" or "agony."
epic, awesome, incredible
In words that come from Greek the prefix ped- stands for "child."
decagon decagons
capture, captive, capsule