TIGHTEST

fixed, fastened, or closed firmly; hard to move, undo, or open

(of a rope, fabric, or surface) stretched so as to leave no slack; not loose

(of an area or space) having or allowing little room for manoeuvre

(of a formation or group) closely or densely packed together

(of a game or contest) with evenly matched competitors; very close

not willing to spend or give much money; mean

drunk

very firmly, closely, or tensely