0 with the sound staying on the same note without going higher or lower when someone is speaking:
Speak with expression, not monotonically.
He speaks monotonically, with little intonation.
1 in a way that only ever increases, or only ever gets less:
He found that words spoken monotonically are more effective than face expressions seen in a film without sound.
The user can select any of 63 different pitch levels, and have words spoken either monotonically or with intonation.
Others have found that CO2 increases monotonically with income.
You could also go back to that linearly, monotonically increasing kind of graph.
Whereas body mass has not evolved monotonically, population and technology have.
Unless = 0, the probability that a farmer is evicted is indeed a monotonically decreasing function of her period one investment.
The combined effect of political and civil freedoms-something we call democratic freedoms-is striking: pollution levels are monotonically decreasing in the extent of democratic freedoms.