The spelling of the word "thronger" is quite simple and straightforward. It is spelled as "th-r-o-n-g-e-r". In IPA phonetic transcription, it is pronounced as /ˈθrɒŋə(r)/. The word "thronger" refers to someone who is a part of a large group or crowd, typically gathered together for a specific purpose. The spelling of this word highlights the importance of the letter "o", which is the third letter in the sequence, before the letter "n" and after the letters "r" and "g".
The word "thronger" does not have a specific etymology as it is not widely recognized or listed in standard dictionaries. It seems to be a derivative noun form of the verb "throng", which means to gather or crowd closely together. The noun "throng" refers to a large, densely packed group of people. However, "thronger" itself does not have a well-established origin or etymology.