Quickest way: use the in-game delete option on the item you placed, or press Backspace/Delete if you’re editing text or an object in Roblox Studio. If you mean a word in Spelling Bee, clearing it is usually just Backspace one letter at a time; if Roblox gets “stuck” deleting whole words, tapping Ctrl again can reset that behavior.

In the game

  • If it’s a placed item or object, click/select it and choose delete/remove from the menu.
  • If it’s text you’re typing, Backspace removes one character at a time.
  • If it suddenly deletes whole words, a modifier key may be stuck; toggling Ctrl can fix it.

Roblox Studio

  • Select the object in the Explorer or on the map and press Delete.
  • You can also right-click the object and choose Delete.

If that’s not it

If by “erase something in Roblox Spelling Bee” you mean deleting a saved word, a chat message, or an inventory item, the exact method depends on which screen you’re on. In one Roblox-related tutorial, removing an item from inventory was done through the item’s menu and a delete action.

TL;DR

  • Typing: Backspace.
  • Stuck deleting whole words: tap Ctrl again.
  • Studio/object: select it, then Delete.