✅ Sensitivity refers to the state of being sensitive or easily affected by things (His sensitivity was a cause of distress to him).

✅ Reactivity means the state of being reactive or tending to react (Their emotional reactivity was a symptom of intense anxiety).

✅ Sensitivity and reactivity both suggest being impacted emotionally by things that may not affect others as extremely.

✅ Reactivity emphasizes frequently responding to this emotional impact in an intense way or in a way that affects others. Sensitivity emphasizes the way you feel rather than the way you respond.

✅ Spot means to detect something or someone through sight, especially in difficult conditions (I spotted my favorite shirt in the back of the closet).

✅ Espy means to catch sight of something or someone, especially at a distance (The captain had espied an enemy ship).

✅ Spot suggests locating or catching someone (I spotted my friend in the crowd).

✅ Espy is a pretty rare word that suggests seeing something at such a distance that it makes it hard to see (I thought I espied the glimmer of a river in the distance).

✅ Blithe means thoughtless or careless (He had a blithe attitude toward other people’s belongings).

✅ Carefree means without worry or anxiety (I felt so carefree on my vacation).

✅ Blithe has a more negative connotation than carefree because it suggests being unthinking or careless toward others, rather than lacking anxieties.

✅ Blithe can also mean having a cheerful disposition, which may also suggest a lack of anxieties (His blithe approach to life cheered us all up).