Which one is spelled correctly?

• সঠিক উত্তর - Occasionally.

• Occasionally (Adverb):
Meaning - At infrequent or irregular intervals; now and then.
Bangla meaning - মাঝেমধ্যে। 
Example Sentence:
- She comes here occasionally.
- We met up occasionally for a drink.

Source: Oxford Dictionary, Bangla Academy accessible Dictionary.