Antonyms of adj shiftless

1 sense of shiftless

Sense 1
shiftless -- (lacking or characterized by lack of ambition or initiative; lazy; "a shiftless student"; "studied in a shiftless way")

INDIRECT (VIA unambitious) -> ambitious -- (having a strong desire for success or achievement)

Similarity of adj shiftless

1 sense of shiftless

Sense 1
shiftless -- (lacking or characterized by lack of ambition or initiative; lazy; "a shiftless student"; "studied in a shiftless way")
       => unambitious (vs. ambitious), ambitionless -- (having little desire for success or achievement)