The adjective "tremendous" entered English in the 1630s from Latin "tremendus" (fearful, to be trembled at, dreadful), the gerundive of "tremere" (to tremble, to shake, to quake with fear). The Latin gerundive "-ndus" suffix indicates something that ought to be or is fit to be — so "tremendus" means literally "that which ought to be trembled at," "fit to cause trembling." The word arrived in English as an expression of awe and terror; its modern weakened sense of merely "very large" or "wonderful" developed later, representing one of the language's most dramatic cases of semantic bleaching.
The Latin verb "tremere" traces to the Proto-Indo-European root "*trem-" (to tremble), which produced words for shaking and trembling across the Indo-European languages. In Latin, the family includes "tremor" (a shaking, an earthquake), "tremulus" (trembling, quivering — the source of "tremulous"), and "tremendus" itself. Through French, the root gave English "tremble" (from Old French "trembler," from Vulgar Latin "*tremulare"). Through Greek "tremos" (trembling), the
In its original English usage, "tremendous" was a word of genuine power. To call something "tremendous" was to say it inspired fear, awe, and physical trembling. The word described the wrath of God, the fury of storms, the terror of battle, and the sublimity of vast natural landscapes. It was the vocabulary of the sublime — the aesthetic category, theorized by Edmund Burke and Immanuel Kant in the eighteenth century, that encompassed
The semantic weakening of "tremendous" began in the eighteenth century and accelerated in the nineteenth. As the word became more common in everyday speech, its intensity diminished. By the twentieth century, "tremendous" could modify almost anything positive — a tremendous success, a tremendous improvement, a tremendous amount of fun. The trembling was gone; only the largeness remained.
This pattern of semantic bleaching is strikingly common among English adjectives of extreme intensity. "Terrible" (from Latin "terribilis," inspiring terror) now means merely "very bad." "Awful" (from Old English, inspiring awe) now means "very unpleasant." "Wonderful" (from Old English, full of wonder) now means simply "very good." "Formidable" (from Latin "formidabilis," causing
The survival of "tremendous" in the vocabulary of nuclear physics offers an ironic counterpoint to its colloquial weakening. The "tremendous" energy released by nuclear fission and fusion — energy that literally causes the earth to tremble — restored to the word, in this narrow technical context, its full original force. When J. Robert Oppenheimer witnessed the first nuclear test and quoted the Bhagavad Gita ("Now I am become Death, the destroyer of worlds"), the "tremendous" power he was describing was tremendous in the oldest, most literal sense: fit to cause trembling.
Cognates across the Romance languages preserve the Latin original with varying degrees of semantic change: French "tremendous" (rarely used; "formidable" or "énorme" serve instead), Spanish "tremendo" (which retains the sense of terrible or awe-inspiring alongside the weakened "enormous"), Italian "tremendo" (similarly retaining the fearful connotation more strongly than English), Portuguese "tremendo." The Spanish and Italian forms are particularly interesting because they have resisted the semantic bleaching that English underwent, maintaining the connection to fear and trembling alongside the expanded sense.
The gerundive form — "that which is to be trembled at" — connects "tremendous" to other English adjectives with the same Latin morphological origin. "Stupendous" (from "stupere," to be stunned) means "that which is to be amazed at." "Horrendous" (from "horrere," to bristle with fear) means "that which is to be shuddered at." These words share with "tremendous" both the gerundive structure and the pattern of semantic weakening, suggesting that the bleaching of extreme emotional vocabulary is a systematic process rather than an accident befalling individual words.
In contemporary English, "tremendous" serves primarily as an enthusiastic intensifier, interchangeable in many contexts with "enormous," "huge," or "incredible." Yet for writers attuned to the word's history, its original force remains available. To describe an earthquake as "tremendous" is to use the word with its full etymological weight: the earth itself is trembling, and we are right to tremble with it.