http://wordsmith.org/awad/archives/0699

pundit
swami
sannyasi
maharajah
mahatma
nabob
sounder
nide
covey
pod
skein
skulk
bevy
synonym
thesaurus
mnemonic
dyslexic
onomatopoeia
anagram
palindrome
guyot
doily
cimmerian
galvanize
hansard
rhadamanthine
algorism
costive
percipient
querulous

skulk - my dictionary doesn't support this, but I have seen etymology given as derived from Germanic "scalk" meaning a slave or servant. A "marshal" was the "mare servant" = in charge of the horses. The seneschal is the most senior servant.
So, to "skulk" meant to be unobtrusive, as servant's infereior status demands.