intermittence; intermittent
filling a vacancy; supplementation; substitute; deputy; alternate
oxygen deficiency; oxygen shortage; lack of oxygen
having no money; lack of money
absence due to illness; sick leave
running out of gasoline (petrol)
authorized absence; permission of absence from class(es)
failure to pay one's compliments; omission of courtesy
removal; omission; lusting
fragment (e.g. of works); incomplete set; incomplete state
omission of a character; omitted character; blank type; insertion of blank spaces before and after the names of dignitaries (as a sign of respect)
to bridge a gap; to supply a lack
missing issue (of magazine)
missing part (of manuscript)