The word gadfly contains the word “fly” – the winged insect that flies through air and often annoys us. Thus, gadfly should remind you of an annoying and irritating person who keeps buzzing around!
The word “altruistic” can be thought of as combination of two words- “all” and “true”. When we are true to one and all , we go beyond our individualistic concerns , for the sake of the well being of others. Thus, we become “altruistic”. Remember thus!
“Circumscribe” should remind you of the circumference of a circle.
“Calumny” should remind you of someone who makes callous statements about you with the intention of bringing calamity in your life. Beware of those people and keep them at a safe distance! Remember thus.
You “rate” something in the hope that it becomes better, right? Or else, why go through the trouble of rating!