(n) (comp) completeness check
(n) absence permission slip
(n) authorized absence
permission of absence from class(es)
(n) hardships and privations
(n) oxygen deficiency
anoxia
hypoxia
(n) mass defect (physics)
(n) dried, sliced herring
(n) cutout
notch
(exp) refraining from offering the (New Year's) greetings during the period of mourning
(v5k,vt) to break into pieces
to chip off
(n) special election
by-election
(n) spare player
substitute
sub
benchwarmer
(n) waxing and waning (of the moon)
(n) fragment
piece
(n) (comp) data unavailability
lack of data
shortage of data
(n) gastric achlorhydria
(exp) to fail in one's social duties
(exp) to make up for a fault
(n) absence permission slip
authorized absence form
(adj-i) having an abundance
(exp,v5r) to take a roll call
(n,adj-na) essential
indispensable
imperative
necessary
compelling, vital, critical
(n) prosthetic group
(n) chipped cup
(n) waning moon
(n) absence permission slip
authorized absence form
(n) quality and defects liability
(exp) to lack in common sense
(n) vitamin deficiency disease
avitaminosis
hypovitaminosis
(n) attention-deficit disorder
ADD