show signs of (something)
To exhibit characteristics or traits indicative or suggestive of something. The economy has shown signs of decline in the last couple of months. The patient is showing all the usual signs of infection, except that there is no fever whatsoever.
show signs of something
to show hints or indications of something. I let the horse run at full speed until it began to show signs of tiring. Sally is showing signs of going to sleep.
show signs of
Exhibit indications or hints of, as in She definitely shows signs of accepting the appointment, or Terry's health shows no signs of improvement. [Late 1400s]