Meaning: This means he securely fastened the window.
Choice of Words: The word closed means to make something become fastened or shut. Tightly means in a firm or secure way.
Alternative Expressions
He slammed the window shut.
Meaning: This means he closed the window with a lot of force, probably making a loud noise.
Choice of Words: The word slammed means to close something with a lot of force, often making a loud noise. Shut means to close something, especially a door or window. So, when you put them together, "He slammed the window shut" means he closed the window with a lot of force, probably making a loud noise.
He sealed the window shut.
Meaning: This means he closed the window completely so that no air or water can get in or out.
Choice of Words: The word sealed means to close something completely so that no air or water can get in or out. Shut means to close something, especially a door or window. So, when you put them together, "He sealed the window shut" means he closed the window completely so that no air or water can get in or out.