Learn English – Name for words that have 3 or more syllables

From Wikipedia:

• Strengths is the longest word in the English language containing only one vowel.

• Rhythms is the longest word in the English language containing none of the five recognised vowels.

• Schmaltzed and strengthed appear to be the longest monosyllabic words recorded in OED; but if squirrelled is pronounced as one syllable only (as permitted in SOED for squirrel), it is the longest.

This Wikipedia article suggests that schtroumpfed is the longest; however, it's really a stretch to say this is an English word in any even remotely established sense (and I am definitely not strict in the words I would consider to be "part of" a language).

It depends on who's saying it, and what idiolect they're speaking. Some people sometimes put an epenthetic shwa between /k/ and /r/ in /krai/ to break up the cluster, and/or make the /r/ syllabic, and/or split the diphthong /ai/ into two pieces. And other times, they don't. It's not standard, sorry. It can vary from one to (in extreme cases, like the Johnnie Ray song) four or more.

Don't start with English writing, or you'll never get anywhere. Syllables are units of aural perception, not of writing; if you're still thinking of cry as containing a "Y", I'm afraid you're gonna hafta learn a whole lotta phonetics.

Start, if you must, with standard phonemic representations like the ones in Kenyon and Knott.