join - connected, fix, enroll, meet, bring together become a member⏎
fickle - changeable, unreliable⏎
highlight - emphasise, indicate, make obvious, emphasize⏎
keen - eager, sharp, competitive, willing⏎
jumpy - nervous, anxious, agitated⏎
mediocre - average, not very good, middling, inferior⏎
mega - impressive, greatest part, very large⏎
handbook - manual, instructions, notes, guide⏎
gimmick - trick, novelty, contrivance⏎
flyer - leaflet⏎