"word coined for a special occasion," and not likely to be wanted again, 1884, from nonce "for a particular purpose" + word (n.). Said to be a translation of Littré's term mot d'occasion.
non-aligned
no-name
non-appearance
non-attendance
nonce
nonce-word
nonchalance
nonchalant
non-com
non-combatant
non-combustible