PETTY - [adjective] small and unimportant; too concerned with unimportant things
Examples of use
Everyone has to face some everyday petty dilemmas, such as deciding on which colour of a blouse to buy.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
You can always find a partner, who would also like to improve his/her