Fear
The effects of this unit'sUnitUnits fall under 2 categories: party and enemy. These 2 categories, in relation to one another, are referred to as opposing units. non-CombatCombatCombat has 1 type of skill die which can be rolled in any battle form except Magic. skills are ignored. This effect does not apply to skill dice already in active slotsActive SlotDice placed in active slots are referred to as active dice. An active die remains in its slot until you remove it as described in its skill line's reference sheet or at the end of battle. or the cooldown trackCooldown TrackDice are placed here as the adventurer exhausts their skill dice or gains fatigue and status effect dice. The Cooldown stat determines the number of dice that are removed from the track each turn..
What are non-Combat skills?
All skills except the skill line called Combat that all adventurers have by default. So an enemy with Fear ignores all of its skills. An adventurer with Fear can only use their Combat skill line, no other skills.
SourceCan an adventurer with Fear still roll skill dice and benefit from tenacity results?
You cannot gain benefits from tenacity results rolled on skill dice either.
SourceDoes Fear work on "after this unit is defeated..." enemy skills?
Fear is meant to prevent even "after defeat" skills from triggering.
Source