[UNDER-1 10 a.] trans. To measure insufficiently or not to the full amount.
1672. Grew, Idea Philos. Hist. Plants, § 4. It is impossible to Measure, what we See not. And since we are most likely to under-measure [etc.].
1845. Disraeli, Sybil, III. i. Many’s the morn we work for nothing,… and many’s the good stint they undermeasure.
