How Do You Spell WEIGHT WATCHINGED?
Pronunciation: [wˈe͡ɪt wˈɒt͡ʃɪnd͡ʒd] (IPA) 
The word "weight watchinged" is not a correct spelling in English. The correct form of the verb is "weight-watched" or "weight-watching" with a hyphen between the two words. The phonetic transcription for the correct form is /weɪt wɒtʃt/ or /weɪt wɒtʃɪŋ/ depending on the tense. The incorrect spelling appears to be a past participle form that has added the suffix "-ed" to the end of the verb stem, which is not a valid way to form past participles in English.
