Synonyms of the word

thickened

• v. simple past tense and past participle of thicken.

callous

• adj. Emotionally hardened; unfeeling and indifferent to the suffering/feelings of others.
• adj. Having calluses.
• n. Alternative form of callus.

calloused

• adj. Having become or being made callous.

thick

• adj. Relatively great in extent from one surface to the opposite in its smallest solid dimension.
• adj. Measuring a certain number of units in this dimension.
• adj. Heavy in build; thickset.
• adj. Densely crowded or packed.
• adj. Having a viscous consistency.
• adj. Abounding in number.
• adj. Impenetrable to sight.
• adj. Difficult to understand, or poorly articulated.
• adj. (informal) Stupid.
• adj. (informal) Friendly or intimate.
• adj. Deep, intense, or profound.
• adj. (Britain, dated) troublesome; unreasonable.
• adj. (slang, chiefly of women) Curvy and voluptuous, and especially having large hips.
• adv. In a thick manner.
• adv. Thickly.
• adv. Frequently; in great numbers.
• n. The thickest, or most active or intense, part of something.
• n. A thicket.
• n. (slang) A stupid person; a fool.
• v. (archaic, transitive) To thicken.

tough

• adj. Strong and resilient; sturdy.
• adj. (of food) Difficult to cut or chew.
• adj. Rugged or physically hardy.
• adj. Stubborn.
• adj. (of weather etc) Harsh or severe.
• adj. Rowdy or rough.
• adj. (of questions, etc.) Difficult or demanding.
• adj. (material science) Undergoing plastic deformation before breaking.
• interj. (slang) Used to indicate lack of sympathy.
• n. A person who obtains things by force; a thug or bully.
• v. To endure.
• v. To toughen.

toughened

• v. simple past tense and past participle of toughen.