An example of to observe is to celebrate a specific holiday.
An example of to observe is to see a bird fly across the sky.
An example to observe is to watch a butterfly grow, take notes and write up a report on it.
Observed upon the unusual weather.
We were invited to the conference solely to observe.
Stood by the window observing.
Origin of observe
From American Heritage Dictionary of the English Language, 5th Edition
- From French observer, from Latin observare (“to watch, note, mark, heed, guard, keep, pay attention to, regard, comply with, etc."), from ob (“before") + servare (“to keep"), from Proto-Indo-European *serw- (“to guard"). Cognate with Gothic [script?] (sarwa, “weapons, armour"), Old English searu (“device, design, contrivance, art, cunning, craft, artifice, wile, deceit, stratagem, ambush, treachery, plot, trick, snare, ambuscade, cleverness, machine, engine, fabric, armor, equipment, arms").