Alterably is an adverb used to describe something that can be changed. There are many synonyms for this word, including modifiable, changeable, adaptable, variable, flexible, adjustable, and mutable. These words all convey the same meaning as alterably but may be preferred in different contexts. Modifiable might be used to describe something that can be changed easily or adjusted. Changeable suggests something that can be transformed or modified significantly. Adaptable suggests something that can be adjusted to different situations or needs. Variable might be used when describing something that is subject to change or fluctuation. Flexible emphasizes the ability of something to bend or move easily. Adjustable suggests something that can be modified or repositioned. Mutable suggests something that can be changed or altered over time.