adjacent (adjective) adjacent: next to, abutting
Detalii: adjacent means next to but not necessarily connected with, while adjoining means next to and connected - adjacent rooms are separated by a wall, adjoining are connected by a common door; things are adjacent when they are side by side, they are adjoining when they share a common boundary and adjacent may or may not imply contact but always implies absence of anything of the same kind in between
Sinonime: a number of times, again and again, generally, many a time, much, oftentimes, ofttimes, over and over, recurrently, regularly, repeatedly, time after time, time and again, usually
Antonime: infrequently, rarely, seldom