Beat only has one syllable.
There are 4 syllables. Un-beat-a-ble.
Uno. One.
1
Clothesline has two syllables. The syllables are clothes-line.
Laboratory has four syllables.
A syllable is a distinct beat in a word. Thus for the word "caption" there are two syllables. These are the distinct beats on "cap" and "tshun."
One and a half. If you clap out the 'beat' of the word as you say it, it becomes easier to spot the syllables. However some words, particularly those with suffixes such as -ed, end up with a half beat on the end.
There are nine syllables in the phrase "much have you traveled in the realms of gold."
There are 4 syllables in pretentiously.
11, unless you didn't mean to repeat does does.
2 + 2 = 4 syllables
It has 5 syllables.