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aggressive : offensive, assaulting, militant adjective
a militant organization or person is willing to use strong or violent action in order to achieve political or social change: militant trade unionists | After the assassination of Martin Luther King, black leaders became more militant.
?militant noun [countable]
?militancy noun [uncountable]
?militantly adverb agile adjective

1 able to move quickly and easily: Andy climbed the tree, agile as a monkey.

2 agile mind the ability to think very quickly and intelligently quick, light,

nimble adjective

1 able to move quickly and easily with light neat movements: a nimble climber | nimble fingers

2 a nimble mind/brain/wit an ability to think quickly or understand things easily: They liked his nimble mind - his ability to come up with original ideas.

?nimbly adverb
?nimbleness noun [uncountable]