The term 'of the highest degree' can be expressed in three different ways: SUPERLATIVE (11 letters), UTMOST (6 letters), and BEST (4 letters). SUPERLATIVE is an adjective that means of the highest degree or quality, surpassing all others. UTMOST is an adverb that means to the greatest or highest degree. BEST is an adjective that means of the most excellent, effective, or desirable type or quality. All three terms refer to something that is of the highest degree or quality.