All 6 Uses

mistrust
in
A Storm of Swords
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She could not understand why Ser Jorah mistrusted the old man so.†
p. 324.5 *

mistrusted = didn't trust or have confidence in
But this was the Red Keep, this was King's Landing, this was the court of King Joffrey Baratheon, the First of His Name, and if there was one thing that Sansa Stark had learned here, it was mistrust.†
p. 76.7
Mance Rayder had not been blind to Rattleshirt's mistrust of the "crow-come-over," so after he had given Jon his new sheepskin cloak he had suggested that he might want to ride with Tormund Giantsbane instead.†
p. 206.3
The Magnar was looking at him too, and he could almost taste the mistrust.†
p. 567.1
The Mallisters had a bone-deep mistrust of the ironborn, Jon knew.†
p. 664.7
Lord Walder peered at her in mistrust.†
p. 703.8

Definition:

to lack trust or confidence