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Definitions

slowness

[sloh-nis] / ˈsloʊ nɪs /
NOUN
dullness
Synonyms
STRONGEST
sluggishness unwillingness
STRONG
apathy indifference lethargy listlessness
WEAK
languidness
Antonyms
STRONG
concern feeling interest sympathy
NOUN
weakness
Synonyms
STRONG
feebleness impotence inactivity

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.