Synonyms of 'ambitious'
in the sense of tough
difficult or troublesome to do or deal with
Whoever wins the election is going to have a tough job.
in the sense of trying
upsetting, difficult, or annoying
The whole business has been very trying.
in the sense of vigorous
having physical or mental energy
The choir and orchestra gave a vigorous performance of Haydn's oratorio.
Video: pronunciation of 'ambitious'
Thesaurus for ambitious from the Collins English Thesaurus