Originally Posted by jackdale
When you "make fast" a line you actually stop it from moving. It is not fast at all
; it is beyond slow.
Actually it is
fast. In the original sense of the word.
The meaning of "moving quickly" is a more recent usage of the word.
Old English fæst
'firmly fixed, steadfast' and fæste
'firmly', of Germanic origin; related to Dutch vast
and German fest
'firm, solid' and fast
'almost'. In Middle English
the adverb developed the senses 'strongly, vigorously' (compare with run hard
), and 'close, immediate' (just surviving in the archaic fast by
; compare with hard by
), hence 'closely, immediately' and 'quickly'; the idea of rapid movement was then reflected in adjectival use.