How do you say greatest in sign language?

There's no single sign for "greatest" in American Sign Language (ASL). Instead, you would sign the concept using a combination of signs and facial expressions. Here's how you might do it:

Option 1: Using "MORE" and a descriptor

1. Sign "MORE": This sign involves pointing your index finger forward and moving it slightly back and forth, as if you're pushing something away.

2. Sign a descriptor: This will depend on what is being considered the greatest. For example, if you're talking about the greatest movie, you might sign "MOVIE."

3. Use facial expressions: Make your face express "superlative" - a raised eyebrow, wide eyes, and possibly a slight tilt of your head.

Option 2: Using "SUPERLATIVE"

1. Sign "SUPERLATIVE": This sign involves signing "VERY" (index finger pointing forward and moving slightly back and forth) followed by "MOST" (index finger pointing up and down with a slight twist of the wrist).

2. Sign a descriptor: Similar to the first option, this will depend on what is being considered the greatest.

3. Use facial expressions: Again, make your face express "superlative" - a raised eyebrow, wide eyes, and possibly a slight tilt of your head.

Example: "The greatest movie"

1. "MORE"

2. "MOVIE"

3. "SUPERLATIVE"

4. "MOVIE"

Remember, sign language is about more than just signs. Facial expressions, body language, and context all play a role in conveying the meaning.