What does "ultra" mean? In what circumstances could I use it?

Native speaker’s answer
Rebecca
"Ultra" means extreme or radical! You can use it when talking about someone who is extreme in their beliefs or ideals, or extreme things, like sports, techniques, or skills. Ex: He was ultra-good at his job. = He was extremely good at his job. Ex: He was ultra-conservative. Ex: The new smartphone is ultra-high-tech. Ex: She was ultra-smart in school and became a doctor.