How to spell STRENTHEND correctly?

If you've made the common typo of writing "strenthend", here are some suggested correct spellings to use: "strengthened", "strengthen", "strengthening" or "stronger". Be sure to double-check your spelling in the future to avoid such errors.

• strengthen The exercise routine is designed to strengthen your core muscles.
• strengthened
• strengthens

Attenttion

• attention
• attentions
• attenuation
• inattention