strengthen

As verbs the difference between underpin and strengthen

is that underpin is to support from below with props or masonry while strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.

As verbs the difference between strengthen and maintain

is that strengthen is to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce while maintain is to support (someone), to back up or assist (someone) in an action.

As verbs the difference between give and strengthen

is that give is (may take two objects) to move, shift, provide something abstract or concrete to someone or something or somewhere while strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.

As a noun give

is (uncountable) the amount of bending that something undergoes when a force is applied to it.

As verbs the difference between strengthen and building

is that strengthen is to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce while building is present participle of lang=en.

As a noun building is

the act or process of building.

As verbs the difference between strengthen and help

is that strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce while help is to provide assistance to (someone or something).

As a noun help is

(uncountable) action given to provide assistance; aid.

As verbs the difference between developed and strengthen

is that developed is (develop) while strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.

As an adjective developed

is (said of a country) not primitive; not third world.

In transitive terms the difference between aggregate and strengthen

is that aggregate is to amount in the aggregate to while strengthen is to augment; to improve; to intensify.

As a noun aggregate

is a mass, assemblage, or sum of particulars; something consisting of elements but considered as a whole.

As an adjective aggregate

is formed by a collection of particulars into a whole mass or sum; collective; combined; added up.

In transitive terms the difference between motivate and strengthen

is that motivate is to animate; to propel; to cause to take action while strengthen is to augment; to improve; to intensify.

As verbs the difference between forge and strengthen

is that forge is to shape a metal by heating and hammering while strengthen is to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.

As a noun forge

is furnace or hearth where metals are heated prior to hammering them into shape.

As a noun persistence

is the property of being persistent.

As a verb strengthen is

(lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce.