abstruse → abysmal abstruse (difficult to understand): I found your statement a bit abstruse.
absurd (illogical, stupid or unreasonable): It is absurd to believe that the number 13 is unlucky.
abundant (plentiful, in large quantities): Also fish are abundant in this lake.
abuse (unfair, cruel or violent treatment): Children in this area in fact suffer racial abuse at school.
abut (next to, adjoin): But our house abuts on a school.
abuzz (filled with noise or activity): The room was also abuzz with discussion.
abysmal (very bad or of a very low standard): The living conditions were on the whole abysmal.