Actually, It's not a prefix it's a greek root. It means faith.
The root word for "fid" comes from the Latin word "fidere," meaning "to trust" or "to have confidence." It is commonly seen in words related to trust, belief, or faith.
"Fid" is considered a root because it is a standalone word element that carries meaning on its own. It cannot be broken down further into smaller meaningful components.
Fidelity
The sum is the total of two or more amounts.
The word part "fid" relates to trust or faith. It is derived from the Latin word "fides," meaning faith or trust. Words such as "confide" or "fiduciary" contain this word part.
A fid is nautical, and is a square wooden or iron bar which takes the weight of a topmast stepped to a lower mast by being passed through holes in both masts.
Actually, It's not a prefix it's a greek root. It means faith.
A fid is a tool used to splice braided rope.
"FID DEF" (more recently FD), an abbreviation of "FIDEI DEFENSOR" meaning "Defender of the Faith", is a title given to King Henry VIII, by Pope Leo X for his stance against the Protestant Reformation. The title has been used by all subsequent British Monarchs and appears in one form or another on all British coins and coins of most of the Commonwealth countries.
A few words that contain "fid" include "confident," "infidelity," and "perfidy."
It means trust or faith as in fidelity which means faithfulness or infidel which is a person with no faith or trust (Nonbeliever)
fid tid