subs. (old: spec. Charterhouse).—A response in answer to a summons or names-calling.
1821. SCOTT, The Pirate, v. Advancing to the door, he exclaimed,—‘Heus tibi, Dave!’ ‘ADSUM,’ answered the youth.
1855. THACKERAY, The Newcomes, 774. A sweet smile shone over his face, and he lifted up his head a little and quickly said ADSUM, and fell back;… lo, he whose heart was as that of a little child had answered to his name, and stood in the presence of the Master.
1900. Daily Telegraph, 23 March, 8. 7. As in the old days of Colonel Newcome, ‘ADSUM,’ or ‘Always ready,’ is still the watchword of the Charterhouse.
1900. TOD, Charterhouse, p. 97. ADSUM is the name of a new institution…. There was no occasion for it when the school was in London, and none could pass beyond the school precincts. Colonel Newcome must have answered ADSUM at prayers only.
