Pronunciation: [tɹˈʌsti] (IPA) 
The word "trusty" is spelled with a "u" after the "t" because it represents the /ʌ/ sound. The IPA phonetic transcription of "trusty" is /ˈtrʌsti/. The "u" in this spelling represents the short sound of the vowel /ʌ/. This pronunciation can be heard in other words such as "lovely" or "sunny." The spelling of "trusty" is essential in conveying its correct pronunciation, which should be used in everyday conversation and communication.
Trusty is an adjective commonly used to describe someone or something that is reliable, dependable, and deserving of trust. It refers to a person or object that can be relied upon to fulfill its purpose or function effectively and faithfully. The word "trusty" emphasizes the quality of trustworthiness, indicating that the person or thing in question has proven themselves to be trustworthy over time.
When used to describe a person, a trusty individual is one who inspires confidence in others due to their consistent and honest behavior. They are considered reliable, faithful, and responsible in fulfilling their commitments and keeping their promises. Trusty individuals gain the trust of those around them through their loyalty, integrity, and sincerity, making them reliable and dependable in various situations.
In the context of objects or tools, a trusty item is one that continues to perform its intended purpose efficiently and effectively. It suggests a long-standing, well-functioning object that has proven its reliability through repeated use or time. This can include items such as a trusty old car, a trusty pocketknife, or a trusty pair of shoes that have stood the test of time.
Overall, the term "trusty" embodies the positive attribute of trustworthiness and is used to describe individuals or objects that have earned the confidence and reliability of others through consistent, faithful, and dependable behavior.
That may be safely confided in or trusted; honest; faithful; that will not fail; firm; strong.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "trusty" dates back to the late 14th century and is derived from the Middle English "tristen" or "trusten", which means "to have faith, trust, or rely on". This Middle English term itself has roots in the Old Norse "treysta" or "tryggr", meaning "to rely on" or "trustworthy". Ultimately, the word can be traced back to the Proto-Germanic word "trauwistjaną" and the Proto-Indo-European root "*deru-" or "*dreu-", which both convey the notion of trust or firmness.
