The short answer is: no, "comfortability" is not a word officially recognized in the Oxford English Dictionary (OED).
While "comfort" and "comfortable" are established and widely used words, "comfortability" is considered a less common, and arguably unnecessary, variant. The OED prioritizes words with established usage and demonstrable presence in reputable sources. "Comfortability" lacks the widespread usage and documented history needed for inclusion.
Why "Comfortability" Isn't Needed
The word "comfortable" already adequately covers the meaning usually intended by "comfortability." Using "comfortability" might even sound awkward or overly formal in most contexts. English often prefers simpler, more concise word choices when they effectively convey the intended meaning.
Think of it this way: we don't say "drinkability" when we mean how drinkable something is; we simply say "how drinkable it is." The same principle applies here. Instead of "the comfortability of the chair," we can say "the comfort of the chair" or "how comfortable the chair is." Both options are more natural-sounding and grammatically correct.
Alternatives to "Comfortability"
If you're aiming for a specific nuance, consider these alternatives depending on the context:
- Comfort: This is the most direct and widely accepted substitute.
- Comfortable: Use this adjective to describe something or someone.
- Ease: This suggests a freedom from difficulty or discomfort.
- Convenience: This highlights the practicality and ease of something.
- Cosiness: This adds a feeling of warmth and snugness.
In conclusion: While "comfortability" might be understandable in spoken conversation, its absence from the OED reflects its lack of widespread acceptance and established usage within formal English. Sticking to more established synonyms will ensure clearer and more effective communication.