capable of being or liable to be observed; noticeable; visible; discernible

an observable change in attitude.

worthy or important enough to be celebrated, followed, or observed

an observable holiday.

deserving of attention; noteworthy.

adjective

hidden , imperceptible , unrecognizable

adjective

appreciable , clear , detectable , discernible , discoverable , evident , noticeable , obvious , open , palpable , patent , perceivable , perceptible , recognizable , sensible , tangible , visible , clear-cut , crystal clear , distinct , manifest , plain , pronounced , distinguishable , ponderable , arresting , bold , conspicuous , eye-catching , marked , outstanding , pointed , prominent , remarkable , salient , signal , striking , aboveboard , overt