| abiding(adjective, calm, strong, secure, firm) |
| acrimonious(adjective, severe, stiff, rigid, tight) |
| anchored(adjective, calm, strong, solid, steady) |
| balanced(adjective, calm, strong, secure, firm) |
| binding(adjective, severe, stiff, rigid, tight) |
| brick wall |
| by the book(expression, adjective, idiom, severe, stiff) |
| by the numbers(expression, adjective, idiom, severe, stiff) |
| calm(adjective, strong, secure, firm, solid) |
| compelling(adjective, severe, stiff, rigid, tight) |
| confining(adjective, severe, stiff, rigid, tight) |
| constant(adjective, calm, strong, secure, firm) |
| convincing(adjective, severe, stiff, rigid, tight) |
| dead set on(expression, adjective, idiom, severe, firm) |
| deep-rooted(adjective, calm, strong, solid, steady) |
| dependable(adjective, firm, solid, determined, vigorous) |
| drawing(adjective, severe, stiff, rigid, tight) |
| durable(adjective, calm, strong, secure, firm) |
| dyed-in-the-wool(adjective, severe, stiff, rigid, tight) |
| enduring(adjective, calm, strong, secure, firm) |