retrenchment

Synonyms

cutting down diminution lessening cutback curtailment downsizing

Etymology

Probably partly from both of the following:
* Middle French retrenchement, retranchement (“removal of a portion from a larger whole; reduction of expenses”) (modern French retranchement (“deduction, subtraction”)), from retrancher, retranchier (“to get rid of, remove completely; to remove a portion from a larger whole; to reduce expenses; to deprive (oneself) of”) [and other forms] + -ment (suffix forming nouns usually of an action or a state resulting from an action). Retrancher and retranchier are derived from Old French re- (prefix meaning ‘again, once more’) + tranchier, trenchier (“to cut”) [and other forms] (modern French trancher (“to slice”)); the further etymology is uncertain, but one possibility is that the Old French words are from Latin truncāre, the present active infinitive of truncō (“to mutilate by cutting off pieces; to truncate”), from truncus (“tree trunk; piece cut off”), ultimately from Proto-Indo-European *twerḱ- (“to carve; to cut off, trim”).
* retrench (“to cut down, reduce; to reduce expenses; to make (an employee) redundant”) + -ment. Retrench is derived from Middle French retrancher, retranchier: see above.

* Middle French retranchement (“defensive work”) (modern French retranchement (“entrenchment”)), from re- (prefix meaning ‘again, once more’) + tranche (“trench”) + -ment (suffix forming nouns usually of an action or a state resulting from an action); or
* retrench (“to construct one or more retrenchments; to protect using retrenchments; to fortify”) + -ment. Retrench is probably derived from Middle French retrancher, retranchier (“to fortify with trenches and banks”), from Old French re- + tranchier, trenchier (“to cut”); see further at etymology 1.

Internal formation from retrench (“take up a defensive position”) + -ment, possibly reinforced by misinterpretation of Etymology 1.