La Palabra del Día : rotundo
rotundo - (adjective) categorical, emphatic, forceful, outright; definitive, resounding; total, complete; round, circular, spherical
Post your sentences in Spanish and English, then vote for the ones you like. The best answer will be chosen tomorrow on the basis of the greatest number of votes and language correctness.
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And don't forget to correct your posts as suggested. Do NOT use subject pronouns!
La semana pasada, mi amigo pronunció un discurso rotundo contra el calentamiento global.
Last week, my friend delivered an emphatic speech against Global warming.
11 Answers
The cat gave a resounding no to exercise until now.
El gato dio un no rotundo a hacer ejercicio hasta ahora.
I haven't lost my shape. "Round" is a shape.
No he perdido a mi forma. "Rotunda" es una forma.
Por lo general, los políticos desmienten rotundamente que hayan tenido una aventura justo hasta les pillan con la mano en la masa
In general, politicians flatly deny that they have been involved with someone right up until they get caught red-handed.
Cuando come demasiado se convierte en mi forma muy rotunda.
When I eat too much my shape becomes very spherical. 
No puede caber una clavija cuadrada en un agujero redondo
You can't place a square peg into a round hole.
Su respuesta fue obviamente un rotundo "NO".
His answer was obviously a resounding 'NO'.
My father gave me a round scolding because I was careless with his binoculars.
Mi padre me dio un regaño rotundo porque era descuidada con sus prismáticos.
Note - you probably won't hear round used like this very often in British English, it's getting pretty old-fashioned but it's still in the dictionary ( and I know it!) and I like that it equates with some of the Spanish meanings. (forceful, outright, emphatic, resounding).
I'd be interested to know if people living in the USA are familiar with it. 
La gente manifestó su desprecio con gritos rotundos!
The people showed their scorn with emphatic screaming!
El arrepentimiento verdadero necesita un cambio rotundo.
True repentance requires a total change.
¿Casarme contigo? Te contesto con un 'no' rotundo. Marry you? My answer is an emphatic 'no'.
Nuestro jefe es demasiado rotundo, a veces. Our boss is too emphatic at times.
