early 15c., "done with careful consideration," from Latin deliberatus "resolved upon, determined," past participle of deliberare "consider carefully, consult," literally "weigh well," from de, here probably "entirely" (see de-) + -liberare, altered (probably by influence of liberare "to free, liberate") from librare "to balance, make level," from libra "pair of scales, a balance" (see Libra). Meaning "characterized by slowness in decision, consciously unhurried" is attested by 1590s. Related: Deliberateness.
1550s, "pertaining to deliberation," from French délibératif or directly from Latin deliberativus "pertaining to deliberation," from past-participle stem of deliberare "consider carefully, consult," literally "weigh well," from de, here probably "entirely" (see de-) + -liberare, altered (probably by influence of liberare "to free, liberate") from librare "to balance, make level," from libra "pair of scales, a balance" (see Libra). Meaning "characterized by deliberation" is by 1650s. Related: Deliberatively; deliberativeness.
1540s, "weigh in the mind, consider carefully;" 1550s, "discuss and examine the reasons for or against," from Latin deliberatus, past participle of deliberare "consider carefully, consult," literally "weigh well," from de, here probably "entirely" (see de-) + -liberare, altered (probably by influence of liberare "to free, liberate") from librare "to balance, make level," from libra "pair of scales, a balance" (see Libra). Related: Deliberated; deliberating. The earlier form of the verb in English was deliberen (late 14c.), from Old French deliberer and directly from Latin deliberare.
late 14c., deliberacioun, "act of weighing and examining," from Old French deliberation, from Latin deliberationem (nominative deliberatio), noun of action from past-participle stem of deliberare "consider carefully, consult," literally "weigh well," from de, here probably "entirely" (see de-) + -liberare, altered (probably by influence of liberare "to free, liberate") from librare "to balance, make level," from libra "pair of scales, a balance" (see Libra).
Sense of "slowness in decision or action" is from early 15c. Meaning "mutual discussion and examination of the reasons for and against a measure" is from late 15c..
mid-14c., "tool to indicate a horizontal line," from Old French livel "a level" (13c.), ultimately from Latin libella "a balance, level" (also a monetary unit), diminutive of libra "balance, scale, unit of weight" (see Libra). Spanish nivel, Modern French niveau are from the same source but altered by dissimilation.
Meaning "position as marked by a horizontal line" (as in sea-level) is from 1530s; meaning "flat surface" is from 1630s; meaning "level tract of land" is from 1620s. Figurative meaning in reference to social, moral, or intellectual condition is from c. 1600. Figurative phrase on the level "fair, honest" is from 1872; earlier it meant "moderate, without great ambition" (1790).