a cloud on the horizon

a cloud on the horizon

also (dark) clouds on the horizon
a problem or difficulty that is likely to happen in the future For farmers, another cloud on the horizon is higher prices for fertilizer and fuel. Even when everything is going perfectly, Bruce can see dark clouds on the horizon.
Related vocabulary: on the horizon
See also: cloud, horizon, on

a cloud on the horizon

a problem or difficulty which you expect to happen in the future The only cloud on the horizon is the physics exam in June - I'm sure I'll do fine in all the others.
See also: cloud, horizon, on