Solution

INFLEXIBLE

2 clues

Rigid

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Other solutions to Rigid

Unbending

Word class: Common adjective
Nature of clue: Synonym
Difficulty: Easy
Sources: Boatload Puzzles

Other solutions to Unbending

RIGID

Words are categorized by artificial intelligence: there can be mistakes.