gradually

definition: 
slowly, but surely
sentence: 
Nasa once adopted the mantra ‘follow the water’, which is now gradually changing into ‘seek signs of life’.
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
gradually
adjective: 
gradual
adverb sentence: 
adjective sentence: 
verb: 
verb sentence: 
noun: 
noun sentence: