Origin: 1350–1400;Middle Englishobserven < Middle Frenchobserver < Latinobservāre to watch, regard, attend to, equivalent to ob-ob- + servāre to keep, save, pay heed to
pre·ob·serve, verb (used with object), pre·ob·served, pre·ob·serv·ing.
qua·si-ob·served, adjective
re·ob·serve, verb, re·ob·served, re·ob·serv·ing.
self-ob·served, adjective
un·ob·served, adjective
un·ob·serv·ing, adjective
well-ob·served, adjective
Synonyms 2. note. Observe, witness imply paying strict attention to what one sees or perceives. Both are “continuative” in action. To observe is to mark or be attentive to something seen, heard, etc.; to consider carefully; to watch steadily: to observe the behavior of birds, a person's pronunciation.To witness formerly to be present when something was happening, has added the idea of having observed with sufficient care to be able to give an account as evidence: to witness an accident.4. mention, say. 6. follow, fulfill. 7. celebrate, keep.
late 14c., "to hold to" (a manner of life or course of conduct), from O.Fr. observer, from L. observare "watch over, look to, attend to, guard," from ob "over" + servare "to watch, keep safe," from PIE base *ser- "to protect." Meaning "to attend to in practice, to keep, follow" is attested from late
14c. Sense of "watch, perceive, notice" is c.1560, via notion of "see and note omens." Meaning "to say by way of remark" is from c.1600.