The word "brainish" is not a commonly used word and may seem unfamiliar to many people. It is spelled as /ˈbreɪnɪʃ/ in IPA phonetic transcription. The "br" sound represents the voiced bilabial fricative, while the "ai" sound represents the diphthong vowel sound of /eɪ/. The "n" sound represents the voiced alveolar nasal, and the "i" sound represents the short vowel sound of /ɪ/. Lastly, the "sh" sound represents the voiceless postalveolar fricative. Overall, the spelling of "brainish" reflects its unique pronunciation.
Hot-headed; no brains, no understanding; witless.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word brainish comes from the Middle English braynisch, which was derived from the Old English brægenisc. This Old English term combined brægen, meaning brain, with the suffix -isc, indicating 'having the quality or nature of.' Over time, it evolved into the modern English word brainish, meaning characterized by mental instability or erratic behavior.