Words similar to useless

Example sentences for: useless

How can you use “useless” in a sentence? Here are some example sentences to help you improve your vocabulary:

(They add useless features that confuse users and waste time.)
Other features, if measured, are useless with respect to revealing a displacement from equilibrium that can be used to extract work by any given specific system.
Occasionally I try to "relate" to the kids by asking them to fetch Daddy a beer, but I sense that they are drifting away--that I have become, for them, every bit as useless, burdensome, and low-yielding in immediate practical utility as they are for me.
To see what I'm talking about, consider a recent Washington Post column by Robert Samuelson, in which he seems to dismiss all macroeconomic analysis--all attempts to understand the behavior of aggregates such as gross domestic product and the price level--as useless, even malign.
"None has proved any less useless for stopping missiles than what we're building now."