i Register
In some senses, observe is marked as archaic. Watch for register when choosing this word.
ADV
carefully, closely | precisely
directly
Scientists cannot observe black holes directly, but they can detect them through radiation.
actually
The teacher actually observed that several students were struggling with the new math concept.
just, simply
She just observed the birds in the garden without disturbing them.
generally, normally
quietly
He quietly observed the other students before joining their conversation.
secretly
experimentally
Researchers experimentally observed how plants respond to different types of light.
VERB + OBSERVE
be able to | be possible | be difficult to
be interesting to
It was interesting to observe how quickly the new students made friends with each other.
PREP
from
The teacher observed the students from the back of the classroom during the test.
PHRASES
be commonly/frequently/widely observed
Wearing black clothes to funerals is widely observed as a sign of respect in many Western countries.
be easily/readily observed, an opportunity to observe sb/sth
ADV
correctly, justly, rightly, shrewdly
He rightly observed that the restaurant's new location would make it harder for regular customers to visit.
drily, sardonically, wryly | tartly
coldly, coolly
She observed coldly that his promises meant nothing to her anymore.
conversationally | mildly, quietly | sadly
PREP
to
She observed to her friend that the restaurant had gotten much noisier than it used to be.
ADV
correctly, faithfully, scrupulously, strictly
The safety rules were strictly observed by all workers on the construction site.
VERB + OBSERVE
fail to
PHRASES
failure to observe sth
The company faced serious fines for its failure to observe safety regulations.