To unscramble the word 'abstinential,' follow these steps: 1. Write down the letters: A, B, S, T, I, N, E, N, T, I, A, L. 2. Look for common prefixes or suffixes; in this case, 'abstin-' is a recognizable prefix. 3. Identify potential root words, such as 'abstain' or 'intention.' 4. Rearrange the letters to form smaller words, such as 'abstain,' 'tine,' 'bail,' 'nail,' etc. 5. Use online anagram solvers or word unscramblers for additional assistance if needed.