Earnest has two syllables: ear-nest.
ele/va/tor
The word watched only has one syllable so it is not syllabicated.
The word "blends" cannot be syllabicated as it only has one syllable.
The word aerial has three syllables like so: aer-i-al.
The word fruit has one syllable. This means the whole word is the syllable and so it can't be divided into syllables.
When there is a double consonant in a word, you typically syllabicate it between the double consonants. For example, in the word "butter," you would syllabicate it as "but-ter."
ren.dez.vous
but ter
earnest
The word "item" is syllabicated as i-tem.
an-i-mal
am-nes-ty
preach-ed.
Un-sure.
Mis-spell.
Fin-e
Grum-ble