closer
The manager waved the closer closer.
The first 'closer' is the agent noun built on the verb 'to close', and it carries that verb's voiced consonant — /ˈkloʊzər/, the relief pitcher who shuts the game down. The second is the comparative of the adjective 'close', which has always been voiceless — /ˈkloʊsər/, meaning nearer. The two sit flush against each other with nothing between them, so the reader has to voice one s and devoice the next inside a single beat, and the sentence turns on a distinction that is carried by one vibrating vocal fold and nothing else.
Meanings
One who or that which brings something to an end: in baseball, the relief pitcher kept back to finish a game; in sales, the person who secures the final agreement; in hardware, a device that pulls a door shut.
- Their closer had not blown a lead all season.
- She was the closer the firm sent in when a deal stalled.
Nearer in distance, time, or relation; separated by less than before.
- Every step brought them closer to the ridge.
- The second draft is closer to what I meant.
Word origin
Both halves descend from Latin 'claudere' (to shut) through Old French, and they split on the way in. The adjective arrived as Old French 'clos', the past participle, whose final s stayed voiceless; the verb arrived from the stem of 'clore' and followed the Middle English habit of voicing a final fricative to mark a verb, giving /kloʊz/. Adding '-er' to each preserved the split it inherited, so the comparative keeps the /s/ of the adjective and the agent noun keeps the /z/ of the verb.
Fun fact
English runs this voicing trick as a system, not an accident: house and house, use and use, advice and advise, grease and grease, mouth and mouth all park the noun or adjective on the voiceless consonant and the verb on the voiced one. What makes 'closer' unusual is that the split survives suffixation. Most of those pairs produce only one '-er' form, but 'close' happens to license both a comparative adjective and an agent noun, so the fork reappears one syllable downstream. The baseball sense is the newest branch on the tree by a wide margin: the save became an official statistic only in 1969, and the dedicated late-inning specialist called a closer took hold over the two decades after that.