Inappreciably is an adverb that means in a way that is difficult or impossible to perceive or measure. The antonyms for this word are appreciably, noticeably, detectably, and significantly, which all convey the idea of being able to perceive or measure a change, difference or deviation. Appreciably means that something is easily perceived or recognized, while noticeably means that it attracts one's attention or becomes obvious. Detectably suggests that something can be observed, measured, or analyzed by specific methods or instruments. Significantly implies that there is a meaningful impact or consequence that can be assessed or evaluated. These antonyms help to convey a sense of clarity, perception, and understanding in contrast to the vagueness and obscurity of inappreciably.