Abbreviation of fidelity. Also, with a . before it, the TLD for Finland.

Ends an if statement the same way esac ends case, in bash. It's short and to the point, and more fun than "end if".

fi originated in Algol 68, the successor to Algol 60.

The name of a sign frequently used by British signers, although I have been unable to ascertain whether it is 'officially' part of British Sign Language at this time. It is an expression of enthusiastic approval, roughly equivalent to "Great!" or "Cool" in spoken English.

To make the sign, hold one hand open, palm up, fingers pointing away from you, and with the other hand form a fist with the thumb extended (ie., the classic 'thumb up' sign). Now strike the open palm with the heel of the fisted hand, and quickly raise the fist, thumb still aloft, until it's roughly shoulder-height. It should look almost as if the fist has bounced off of the palm. As with all signs, your facial expression should also mirror the sentiment expressed by the sign.

Of course, in order to explain here how to make the sign, I've had to write it as if it actually consists of several isolated movements. In practice though it is all done in one smooth move.

'Fi' probably gets its name from the fact that an exhalation of breath often accompanies the strike of fist on palm, making a 'Fff!' sound or similar. Even signers with no sense of hearing tend to make this exhalation. If you want to know why, I suggest you try it for yourself: it just feels right.

Fi is also an abbreviation for the Scottish name Fiona meaning fair. It is also a shortened version of Fifi another friendly if not extremely feminine variation!

Although Scottish by origin the name connotes a French stereotypeand is often the title of many a poodle dog or can-can dancers! Famous Fi's include: me and Bob Geldof and the late Paula Yates's first born daughter Fifi Trixibelle.

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