fortify

/ˈfɔːtɪfaɪ/ · FOR-tih-fyeverb

Strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

Use fortify to express this relationship precisely: strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

What fortify Really Means

The word becomes easier to use when its closely related senses are separated and compared.

1

Core action

Strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

Example

Engineers fortified the wall with steel supports.

2

Common construction

Use this expression in its normal grammatical frame so the relationship between the surrounding ideas remains explicit.

Example

Additional evidence fortified the historian's argument.

3

Reasoning effect

It tells the reader how to interpret the timing, scope, evidence, contrast, condition, or consequence in the statement.

Example

The programme aims to fortify coastal communities against flooding.

Use fortify Naturally

Notice how the surrounding noun or clause reveals the exact shade of meaning.

Engineers fortified the wall with steel supports.

Additional evidence fortified the historian's argument.

The programme aims to fortify coastal communities against flooding.

Precision Matters

Fortify overlaps with several common words, but each carries a different emphasis.

fortify

Means strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

vs.
bolster

Means to support, strengthen, or reinforce.

fortify

Means strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

vs.
buttress

Means to support, strengthen, or reinforce an argument or structure.

fortify

Means strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

vs.
undermine

Means to weaken, erode, or reduce confidence in something.

fortify

Means strengthen, reinforce, or protect something against damage, attack, weakness, or decline.

vs.
deplete

Means to reduce the amount or supply of something, often substantially.

Test fortify in Context

The added supports strengthen and protect the tower.

1

Cross-bracing was added to ___ the tower against strong winds.

Prepared byFirst Academy
Editorial responsibilityFirst Academy Academic Team
Updated3 August 2026
Selection and reviewRead our methodology