Antonyms of adj gibbose

1 sense of gibbose

Sense 1
gibbous, gibbose -- ((used of the moon) more than half full)

INDIRECT (VIA convex) -> concave -- (curving inward)

Similarity of adj gibbose

1 sense of gibbose

Sense 1
gibbous, gibbose -- ((used of the moon) more than half full)
       => convex (vs. concave), bulging -- (curving or bulging outward)