Here are the words with different stress patterns from the others in each group:

1. **Asleep** - primary stress on the second syllable, whereas the others typically have stress on the first syllable.
2. **Critique** - the stress is typically on the second syllable as well, while the others often have stress on the first syllable.
3. **Engage** - stress pattern differs as it has a strong emphasis on the second syllable.
4. **Frightening** - the stress shifts compared to its counterparts that usually maintain a first-syllable stress.

In summary, look for words that shift formal stress patterns compared to their group.