1. Length (noun) - Long (adjective)
2. Lengthen (verb) - Make longer
3. Lengthy (adjective) - Very long or taking a long time
4. Lengthwise (adverb) - In the direction of the length
5. Lengthiness (noun) - The quality of being long or taking a long time
6. Lengthen (verb) - To become longer or make something longer
7. Lengthened (adjective) - Made longer or extended
8. Lengthening (noun) - The act of making something longer or becoming longer
9. Lengthily (adverb) - In a long or protracted manner
10. Lengthener (noun) - Something that makes something longer or extends it.