Akademik

stiffness
noun
1. the physical property of being inflexible and hard to bend (Freq. 1)
Derivationally related forms: ↑stiff
Hypernyms: ↑inelasticity
2. the property of moving with pain or difficulty (Freq. 1)
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he awoke with a painful stiffness in his neck

Derivationally related forms: ↑stiff
Hypernyms: ↑awkwardness, ↑clumsiness
3. firm resoluteness in purpose or opinion or action
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a charming host without any touch of stiffness or pomposity

Derivationally related forms: ↑stiff
Hypernyms: ↑resoluteness, ↑firmness, ↑firmness of purpose, ↑resolve, ↑resolution
4. excessive sternness
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severity of character

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the harshness of his punishment was inhuman

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the rigors of boot camp

Syn:
severity, ↑severeness, ↑harshness, ↑rigor, ↑rigour, ↑rigorousness, ↑rigourousness, ↑inclemency, ↑hardness
Derivationally related forms:
hard (for: ↑hardness), ↑inclement (for: ↑inclemency), ↑rigorous (for: ↑rigorousness), ↑rigorous (for: ↑rigor), ↑harsh (for: ↑harshness), ↑severe (for: ↑severeness), ↑severe (for: ↑severity)
Hypernyms: ↑sternness, ↑strictness
5. the inelegance of someone stiff and unrelaxed (as by embarrassment)
Syn: ↑awkwardness, ↑clumsiness, ↑gracelessness
Derivationally related forms: ↑stiff, ↑graceless (for: ↑gracelessness), ↑clumsy (for: ↑clumsiness), ↑awkward (for: ↑awkwardness)
Hypernyms: ↑inelegance
Hyponyms: ↑woodenness, ↑rusticity, ↑gaucherie

Useful english dictionary. 2012.