expletive /ek-, ik-splēˈtiv or eksˈpli-tiv/

1. Filling out
2. Added merely to fill up (a line of verse)

1. A swear-word of any kind
2. A meaningless oath
3. A word or anything present merely to fill a gap
4. A word inserted to fill up a sentence or line of verse
5. A meaningless word serving a grammatical purpose only

explēˈtory (also /eksˈpli-/) adjective

1. Serving to fill up
2. Expletive
3. Supplementary

• uranium hexafluoride
• uranium-lead dating
• uraniums
• urano-
• uranographer
• uranographers
• uranographic
• uranographical
• uranographies
• uranographist
• uranographists
• uranography
• uranologies
• uranology
• uranometries
• uranometry
• uranoplasties
• Unicode
• unicolor
• unicolorate
• unicolorous
• unicolour
• unicoloured
• unicorn
• unicorn-moth