Practice these words
3 levels: flashcards, quiz, and writing
contribute
give; add to
explore
investigate
impress
affect strongly
outdoor
external
point
The sharp end of something
proposed
suggested
slam
shut forcefully
swear
promise under oath
upper
higher position
resistant
inability to sleep
addicted
mind-altering
impeccable
flawless
junk mail
unsolicited advertisements
carefree
rotate a phone number
charade
without worries or stress
be responsible for sth / doing sth
pretend game
unnoticed
be answerable for something
switch off
without being seen or noticed
lower case
silent or unable to speak