Hibernian manager Colin Calderwood was disappointed by the "fear" shown by his side in their defeat by Motherwell.
Jamie Murphy's early header gave Motherwell a deserved win to leave the Hibs boss questioning his players' professionalism.
"You can be termed a professional footballer, but unless you actually do something on a Saturday it is a loose term," he told Sportsound.
"I'm as disappointed as I've been since I joined the club."
Hibs goalkeeper Graham Stack was named man of the match after pulling off a string of fine saves, including a superb double block after the break to deny Stephen Craigan and then Michael Higdon.
But Calderwood had scant praise for his side, who are a point ahead of bottom side Inverness Caledonian Thistle.
"We made everything difficult," he said.
"We didn't play, because we were scared of playing. We didn't get anywhere near putting any pressure on them.
"It looked lacklustre, we didn't have any impetus or oomph. The desire is there, but they didn't show it.
"They were on the pitch, but they weren't doing anything."
A crowd of 8518 saw Hibs lose at home for the third time this season, with Calderwood ready to demand answers from the playing staff.
"All it does is raise question marks and not about their ability," he added.
"It's about their personality, character, temperament and being able to play on a match day.
"We hoped this would be a real step forward, but we didn't perform and, when you don't perform, you leave yourself open and deserve criticism."