(publishing, bibliography) page absence; missing page

(manufacture) underfill

(vulgar) asshole (anus) / (vulgar) asshole (jerk, bastard)

absence due to illness

to be absent due to illness

confrontation, face-off, showdown

to face off, to confront

freezing / (finance) freezing / (computing, uncommon) compression of an archive / (Internet) suspension of an account (usually on Twitter)

to freeze / (finance) to freeze / (computing, uncommon) to compress an archive / (Internet) to suspend an account (usually on Twitter)

missing number in a series