It depends on what sort of 'structure' you are talking about, it has many different meanings, eg. building, organisation (preparation), planning, etc. Please be more clear and I can help. (:
instructure
Trellis is a noun for a structure that supports climbing plants such as ivy or morning glories. There is no antonym for the word trellis.
Anatomy is a noun for the physical structure of a plant, animal, and sometimes inanimate things such as a building or a script. There is no direct antonym for anatomy. A plant, a creature, or a plot may be 'formless' but its formlessness is its structure.
'Disorder' is an antonym of 'organization'. An antonym is a word having an opposite meaning. 'Opposite' is an antonym of 'same'.
Using "along" to imply location along the length of a structure, the opposite could be either perpendicular (to) or separated (from). The colloquial usage as "came along" (accompanied, present) has no antonym.
The antonym for "structure" is "chaos." While "structure" refers to an organized arrangement or framework, "chaos" signifies disorder and lack of coherence. Other possible antonyms include "disorder" and "disorganization."
An antonym for "geode" could be "void," as a geode is a rock containing a cavity filled with crystals, while a void suggests an absence of material or substance. Another possible antonym could be "solid," emphasizing the difference between a hollow structure and a fully filled one.
The antonym of the word 'synonym' is 'antonym'.
An antonym means "opposite". So an antonym for the word synonym is antonym.
The antonym for from is to. Because antonym means opposite.
Antonyms of the word pluralistic can be: (but aren't limited to) Multiple, several, numerous, many, bountiful, copious.
What is the antonym of interdependence. What is the antonym of interdependence.