-able vs -ible

Right after "-ance versus -ence," the next great spelling puzzle is "-able versus -ible." Both endings sound the same when you say them, yet only one is correct for any given word. Do you write "sensible" or "sensable"? "noticeable" or "noticible"? This advanced focus drill zeroes in on that single decision, gathering words from both camps so you can train your instinct for which ending belongs where. You'll hear each word and pick the right spelling, and the explanations share the most useful guideline going, even though English keeps a few exceptions up its sleeve.

This drill covers ten words split across the two endings: noticeable, manageable, comfortable, incredible, valuable, inevitable, sensible, divisible, possible, and irritable. A handy pattern helps with many of them: full words tend to take "-able," which is why "comfortable" (from "comfort") and "noticeable" (from "notice") use it, while roots that aren't whole words on their own often take "-ible," like "incredible" and "divisible." The explanations show you where that pattern holds and where a word just has to be memorized. Because this is tougher material, it sits off the main track, perfect for when you've mastered the basics and want a real challenge. These endings appear all over careful writing, so conquering them is a genuine mark of a skilled speller. Take the drill and watch the guesswork start to fade. Treat it as a stretch goal rather than a basic checkpoint, and don't sweat the misses. The endings here are slippery by nature, and even careful writers keep a couple of them on a mental cheat sheet. Run the drill a few times and that cheat sheet gets shorter every round.