a syllable is defined as: "an uninterrupted segment of speech consisting of a center of relatively great sonority with or without one or more accompanying sounds of relatively less sonority" ....if that made no sense to me, you probably didn't understand it either. I looked up sonority, and I got: "the condition or quality of being resonant" so I looked up resonant, and I get: "resounding or echoing, as sounds"
So, basically, a syllable is a single, goo, strong sound with some other kinda wimpy sounds.
Take "thwart" for example. The "a" is very strong, but the "thw" and "rt" are less stressed and more "on the sidelines" as far as letters go.
Now, let's take "sidelines." sIdelInes. Two strong centers, two syllables.
How do you find out how many syllables are in the word doggedly?
Say the word aloud and count how many parts of the word you say. Alternatively you can clap as you say the word and count how many claps you make.
For example, the word 'doggedly' has 3 syllables. When you say this word aloud and use the clapping method, you will clap 3 times as you say it, indicating that there are 3 syllables. (Dog-ged-ly)