duty Copy link Outline I. Moral obligation1. offĭcium (the most comprehensive term)2. mūnus, ĕris, n. (an allotted d. or task)3. (after to be) expr. by gen., with ellipsis of officium, etc.4. (like preced.) expr. by ŏportet, 2 (with acc. and infin.)II. An act of respectful attentionIII. Military responsibilityIV. An impost • duty: I. Moral obligation: 1. offĭcium (the most comprehensive term): to satisfy the call of d., officio satisfacere, Cic.: to neglect d., of. praetermittere, negligere, deserere, Cic.; officio suo deesse, Cic.: it is a breach of d., contra of. est, Cic. The abstract sense may be more fully expr. by plur.: thus Cic.'s treatise on duty or moral obligation is entitled "de officiis": cf. Cic. Att. 16, 11, 3. 2. mūnus, ĕris, n. (an allotted d. or task): to discharge a d., munere perfungi, Cic.: Liv.: v. task, function. In pl., munia, orum, is often used: the d.s of candidates, munia candidatorum, Cic.: Tac. 3. (after to be) expr. by gen., with ellipsis of officium, etc.: it is the d. of a judge, a commander, judicis, imperatoris est: v. L. G. § 266. (But for it is my, your d., meum, tuum est, ib. Obs. 2.) 4. (like preced.) expr. by ŏportet, 2 (with acc. and infin.): whom it was our d. to have put to death, quos trucidari oportebat, Cic.: contrary to d., contra atque oportet, Cic.: v. ought. II. An act of respectful attention: Phr.: to pay one's d. to the gods, deos salutare, Cic.: Ter. (v. respects, compliment): to pay the last d.s to any one, justa alicui solvere, Cic.; also justa facere, Sall.: for justa we find also extrema munera, Val. Fl.; and suprema officia, Tac. III. Military responsibility: Phr.: to be on d. (mount guard), stationem agere, Tac.; in statione manere, Ov.: also, excubias agere, Tac.; excubare, Cic.: v. watch, guard. IV. An impost: vectīgal, ālis, n.: to pay d., v. pendĕre, Cic.: to release from d., vectigali liberare, Cic.: to lay a d. on anything, alicui rei v. imponere, Cic.: v. due (II.), tax.