link - connect, join, relationship, communicate, intermediary⏎
keynote - important thing, chief thing⏎
expand - grow, broaden, increase⏎
indicative - showing, suggesting, evidential⏎
fall - decrease, drop, descend, fail⏎
expert - ace, skilled, proficient⏎
malfunction - fail, stall, break down⏎
gratis - free, uncharged⏎
hypothetical - suppositional, imaginary⏎
legitimate - legal, genuine, legally acceptable⏎