This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Extremely large in amount, extent, or degree; enormous: a tremendous task. See Synonyms at enormous.

adj. Informal Marvelous; wonderful: had a tremendous time at the theater last night.

adj. Capable of making one tremble; terrible.

adj. awe-inspiring; terrific.

adj. Notable for its size, power, or excellence.

adj. Extremely large (in amount, extent, degree, etc.) or great

adj. Fitted to excite fear or terror; such as may astonish or terrify by its magnitude, force, or violence; terrible; dreadful

Such as may or does excite trembling, fear, or awe; overpowering in character or quality; awful; dreadful: as, a tremendous explosion; tremendous invective.

Hence Such as to excite astonishment or awe; unexampled; wonderful in a high degree; overwhelming; astounding: used intensively or hyperbolically.

Synonyms Frightful, terrific, horrible, appalling.

adj. extreme in degree or extent or amount or impact

adj. extraordinarily good or great ; used especially as intensifiers

adj. extraordinarily large in size or extent or amount or power or degree

"You mentioned the word tremendous upside and that sounds bullish from you and knowing you in the past, I haven't heard you talk like that."

extraordinary    big    large   

tremendously   

frightful    terrible    terrific    horrible    awful    dreadful    immense    fearful    surprising    gigantic   

horrendous    stupendous   

terrible    immense    considerable    incredible    constant