One tip is to choose words with strong negative connotations. For example, 'dread' can make the reader feel a sense of impending doom right away. Also, words like 'bleak' can paint a desolate and spooky picture. Another important thing is to use words that create an atmosphere, like 'foggy' for a mysterious and potentially dangerous setting.
When using 'words to write a horror story', think about how words can create a sense of the unknown. Words like 'abyss' give the impression of a vast, unknowable and potentially dangerous space. Also, words like 'cursed' can add a supernatural element. For example, a character might find a cursed object in an old attic. The very word 'cursed' makes the reader expect bad things to happen. And then use words like 'shudder' to show the character's reaction to the horror, which also helps the reader empathize with the fear.
Well, use words that play on the senses. 'Cold' not only describes a temperature but can also make the reader feel a sense of unease. 'Silence' is also great as it can be quite eerie. Combine these with words like 'menace' to show that there is a threat lurking. For instance, in a silent, cold room, a sense of menace starts to build as the character realizes they are not alone. You can also use words like 'forbidden' to add an extra layer of mystery and horror.