seriously
SIR-ee-uhs-lee 
<French<Latin
gravely; importantly
quibbling
KWIB-ling 
<Latin
petty arguing; carping
gastrostomy
gas-TRAWS-tuh-mee 
<Greek
surgical opening of the stomach
hyperborean
hy-puhr-BOHR-ee-uhn 
<Greek
of a northern region; frigid
unfathomable
un-FATH-uhm-uh-buhl 
<Latin
impossible to understand
rarefaction
RER-uh-fak-shuhn 
<Latin
the act of making rare, thin, porous, or less dense
inpregnable
in-PREG-nuh-buhl 
<Latin
incapable of being taken by assault
blolly
BLAW-lee 
<unknown
a tree of Florida and the West Indies
annelid
AN-uh-lid 
<French<Latin
an earthworm or leech
decamerous
dee-KAM-uhr-uhs 
<Latin
having ten parts (flowers)