Antonyms of adj unobservant

1 sense of unobservant

Sense 1
unobservant, unseeing -- (not consciously observing; "looked through him with blank unseeing eyes")

INDIRECT (VIA unperceptive) -> perceptive -- (having the ability to perceive or understand; keen in discernment; "a perceptive eye"; "a perceptive observation")

Similarity of adj unobservant

1 sense of unobservant

Sense 1
unobservant, unseeing -- (not consciously observing; "looked through him with blank unseeing eyes")
       => unperceptive (vs. perceptive), unperceiving -- (lacking perception; "as unperceptive as a boulder")