Makes sure' is an expression that means to ensure something is done correctly. The crossword solutions for this term are SEES (4 letters), SEESTOIT (8 letters), and NAILSDOWN (9 letters). SEES is a verb meaning to observe or look at something. SEESTOIT is an archaic form of the phrase 'see to it, ' which means to take care of something. NAILSDOWN is an idiom meaning to make something certain or definite.