strengthen

As a noun stress

is stress (emotional pressure).

As a verb 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 grow and strengthen

is that grow is (ergative) to become bigger 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 immunize and strengthen

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

As a verb strengthen

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

As a noun development is

(uncountable) the process of developing; growth, directed change.

As verbs the difference between safeguard and strengthen

is that safeguard is to protect, to keep safe 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 safeguard

is something that serves as a guard or protection; a defense.

As verbs the difference between aggrandize and strengthen

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

Strengthen is a related term of verify.

As verbs the difference between strengthen and verify

is that strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce while verify is to substantiate or prove the truth of something.

Enhearten is a related term of strengthen.

As verbs the difference between enhearten and strengthen

is that enhearten is to comfort and embolden, encourage, animate, hearten 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 tree

is that strengthen is (lb) to make strong or stronger; to add strength to; to increase the strength of; to fortify; to reinforce while tree is to chase (an animal or person) up a tree.

As a noun tree is

a large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).

Strengthen is a related term of assure.

As verbs the difference between strengthen and assure

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

As an adjective assure is

insured.

As a noun assure is

insuree.