Watch closely.
Meaning: This means to observe something with great care and attention. It's like saying, Pay close attention to what is happening.
Choice of Words: Watch is a verb meaning to look at something carefully or to pay close attention. Closely is an adverb that means in a careful or attentive manner. When put together, "Watch closely" means to pay close attention to something by looking at it carefully.
Alternative Expressions
Related Expressions