12. observe to remark or comment (usu. fol. by on or upon).
Etymology: (1350–1400; ME < MF observer < L observāre to watch, regard =ob-ob-+servāre to keep, save, pay heed to)
Definition of 'observe'
Princeton's WordNet
1. (verb)detect, observe, find, discover, notice discover or determine the existence, presence, or fact of "She detected high levels of lead in her drinking water"; "We found traces of lead in the paint"
2. (verb)note, observe, mention, remark makemention of "She observed that his presentation took up too much time"; "They noted that it was a fine day to go sailing"
3. (verb)note, take note, observe observe with care or pay closeattention to "Take note of this chemical reaction"
4. (verb)observe watch attentively "Please observe the reaction of these two chemicals"
5. (verb)respect, honor, honour, abide by, observe showrespect towards "honor your parents!"
6. (verb)observe, celebrate, keep behave as expected during of holidays or rites "Keep the commandments"; "celebrate Christmas"; "Observe Yom Kippur"
7. (verb)watch, observe, follow, watch over, keep an eye on follow with the eyes or the mind "Keep an eye on the baby, please!"; "The world is watching Sarajevo"; "She followed the men with the binoculars"
8. (verb)observe, keep, maintain stick to correctly or closely "The pianist kept time with the metronome"; "keep count"; "I cannot keep track of all my employees"
9. (verb)observe, keep conform one's action or practice to "keep appointments"; "she never keeps her promises"; "We kept to the original conditions of the contract"
1. (verb)observe to see or watch The officer observed that the man had a cut above his eye.; scientists observing the monkeys behavior
2. observe to follow a rule, law, or agreement to observe a treaty/ceasefire
3. observe to make a comment "He'll regret that," his father observed.
Definition of 'observe'
Webster Dictionary
1. (verb)observe to take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility
2. (verb)observe to be on the watch respecting; to pay attention to; to notice with care; to see; to perceive; to discover; as, to observe an eclipse; to observe the color or fashion of a dress; to observe the movements of an army
3. (verb)observe to express as what has been noticed; to utter as a remark; to say in a casual or incidental way; to remark
4. (verb)observe to take notice; to giveattention to what one sees or hears; to attend
5. (verb)observe to make a remark; to comment; -- generally with on or upon
Definitions of observe 
Afrikaans: opmerk , waarneem, sien
Arabic: يُلاحِظ
Bulgarian: забелязвам
Brazilian: notar
Czech: zaznamenat
German: bemerken
Danish: bemærke; lægge mærke til
Greek: αντιλαμβάνομαι, προσέχω
Spanish: observar, notar
Estonian: tähele panema
Farsi: متوجه شدن
Finnish: huomata
French: remarquer
Hebrew: לְהַבחִין
Hindi: देखना
Croatian: uočiti
Hungarian: észrevesz
Indonesian: memperhatikan
Icelandic: taka eftir
Italian: notare
Japanese: ～に気がつく
Korean: 알아채다
Lithuanian: pastebėti
Latvian: ievērot
Malay: nampak
Dutch: opmerken
Norwegian: legge merke til
Polish: spostrzec
Persian: متوجه شدن
Pashto: متوجه كيدل
Portuguese: reparar em
Romanian: a remarca
Russian: замечать
Slovak: všimnúť si
Slovenian: opaziti
Serbian: primetiti
Swedish: lägga märke till, uppmärk
Thai: สังเกต
Turkish: farketmek
Taiwanese: 注意到
Ukrainian: примічати, помічати
Urdu: محوس کرنا
Vietnamese: theo dõi
Chinese: 注意到
