"attenuate" in the verb sense
1. rarefy, attenuate
weaken the consistency of (a chemical substance)
2. attenuate
become weaker, in strength, value, or magnitude
"attenuate" in the adjective sense
1. attenuate, attenuated, faded, weakened
reduced in strength
"the faded tones of an old recording"
Source: WordNet® (An amazing lexical database of English)
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