Late 19th century; earliest use found in The Shetland News. From per- + a second element of uncertain origin. Compare earlier pershittie and discussion at that entry.
Definition of perskeet in US English:
perskeet
(also pirskeet, perskiet, perskit)
adjectivepəˈskiːt
Shetland, Scottish
Fastidious, pernickety, meticulous; demanding.
Origin
Late 19th century; earliest use found in The Shetland News. From per- + a second element of uncertain origin. Compare earlier pershittie and discussion at that entry.