Word of the Day for Thursday, March 5, 2009:
รำคาญ /ramˈkʰaan/ to be annoyed, irked.
Used both intransitively (e.g. รำคาญจริงๆ "I am seriously annoyed") and transitively (e.g. รำคาญเพื่อนบ้านฉลองกันเสียงดัง "I'm annoyed by the neighbors' loud celebrations").
Even though you use it to describe yourself, it's a passive aggressive way of saying something/someone else is annoying. So that last sentence is a way of saying, "The neighbors are being really obnoxious (with their noisy celebrations)". And if uttered alone as an interjection in contemptuous tone, it is a strong rebuke indeed.
Bonus vocab: The sister word of รำคาญ /ramˈkʰaan/ is น่ารำคาญ /ˈnâa ramˈkʰaan/ "annoying, irksome, bothersome".
This word is all too fitting for me today. In one of those irksome moods. Which means that today I'm trying not to overtly act ขี้รำคาญ /ˈkʰîi ramˈkʰaan/ "irritable".