To meddle is to involve oneself inappropriately, and often aggressively, in someone else’s business: She'd had about enough of her in-laws meddling in her personal life. If someone interferes in your personal life, they are meddling. However, interfere has several other dictionary definitions which are not synonymous with meddle. These meanings all involve interrupting, delaying, or hindering some action, as when loud music interferes with your studying, or an electrical current interferes with radio reception. Note that with these senses of interfere, a thing can interfere with another thing, whereas meddling almost always implies human agency and intention. Of course, larger entities like governments are also described as meddling—in the affairs of another country, for example.

The adjective lazy is commonly used to describe people who dislike and try to avoid work or other exertion. Used in this way, lazy often suggests a weakness of character. Someone who is lethargic, on the other hand, may do as little or move as slowly as a lazybones, but they are afflicted by a lack of energy, alertness, and interest, which has a cause other than an aversion to work: perhaps illness, overeating, or exhaustion. One might feel lethargic after Thanksgiving dinner; a demoralized team might give an unusually lethargic performance. Lethargic is also commonly used to characterize the actions of more abstract entities or systems, as a lethargic economy or the government’s lethargic response to a crisis. Lethargic in such cases can mean slow to act, grow, or respond to stimuli.

To walk is to advance or travel on foot. This verb is incredibly useful, but if you’re looking to convey that someone is walking at a leisurely pace with no particular aim, the verb saunter is the more effective choice. Saunter suggests an easy, unhurried manner of travel similar to the synonyms amble and stroll—though saunter is sometimes used to paint a picture of someone who makes a show of their nonchalance, especially in circumstances that might call for alacrity or promptness: Just as the potential homebuyers were getting ready to leave the open house, a real-estate agent sauntered over and offered them lemonade.