1
strenuous
1
swamped(adjective, lively, active, overrun, busy)
1
tireless(adjective, determined)
1
unavailable(adjective, lively, active, busy, occupied)
1
under sail
1
under way
1
untiring
1
unwearied(adjective, tireless)
1
unwearying
1
weariless(adjective, tireless)
1
with a customer(expression, idiom, active, overrun, occupied)
1
zealous
0
purposeful
0
accessible
0
advancing
0
afoot
0
agile
0
alert
0
anticipated
0
approaching
11 years ago|2.4k views|share |citing 
APASmart Define. (2015). on the go thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/on_the_go/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the go thesaurus" https://smartdefine.org/on_the_go/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, on the go thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/on_the_go/thesaurus/synonyms>.
MLASmart Define. "on the go thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/on_the_go/thesaurus/synonyms>