Inspired by this
What is the longest word you can form by using other words arranged in alphabetical order, and making a ladder out of their letters.
Example: (8 letters - Identity)
The width of the ladder (which refers to the largest index of any letter in the series. For example, in the above series, the width is 3) should lie between 2 and half the length of the word (for example if the word(to be made) has 9 digits, then the width can be 2, 3, or 4 only)
The words need to be taken from English language only.
You may refer dictionaries, but no programming allowed.
Use of abbreviations and proper names is not allowed
In case of a tie, the series in which the last word ("zygote" in the example) comes earlier will be the winner.
(After @AHKieran's answer) The letter's index should follow a pattern like 12321232123 or 1234543212345 or 34543212345432 only. You cannot have the same index used of the consecutive words, and it is not important to start with the first letter of the first word, but the indices should be from 1 to the width of the letter only (in order).
You can use one word only once, and the word you are trying to make cannot be used in the series. (In the example, I cannot use "Identity" in the series).
May the longest word win!
Try making pneumonoultramicroscopicsilicovolcanoconiosis (I haven't checked if it's possible or not, but even I'll try making this)