Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb ponder

1 sense of ponder

Sense 1
chew over, think over, meditate, ponder, excogitate, contemplate, muse, reflect, mull, mull over, ruminate, speculate -- (reflect deeply on a subject; "I mulled over the events of the afternoon"; "philosophers have speculated on the question of God for thousands of years"; "The scientist must stop to observe and start to excogitate")
       => think, cogitate, cerebrate -- (use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere")

Antonyms of adj pondering

1 sense of pondering

Sense 1
brooding, broody, contemplative, meditative, musing, pensive, pondering, reflective, ruminative -- (deeply or seriously thoughtful; "Byron lives on not only in his poetry, but also in his creation of the 'Byronic hero' - the persona of a brooding melancholy young man";)

INDIRECT (VIA thoughtful) -> thoughtless -- (showing lack of careful thought; "the debate turned into thoughtless bickering")

Similarity of adj pondering

1 sense of pondering

Sense 1
brooding, broody, contemplative, meditative, musing, pensive, pondering, reflective, ruminative -- (deeply or seriously thoughtful; "Byron lives on not only in his poetry, but also in his creation of the 'Byronic hero' - the persona of a brooding melancholy young man";)
       => thoughtful (vs. thoughtless) -- (exhibiting or characterized by careful thought; "a thoughtful paper")