The word watched only has one syllable so it is not syllabicated.
ele/va/tor
Earnest has two syllables: ear-nest.
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
The word "item" is syllabicated as i-tem.
am-nes-ty
Fin-e
Grum-ble
preach-ed.
an-i-mal
Un-sure.
Mis-spell.
The word, history, is syllabicated HIS-TOR-Y