It is rare in the TLS office for a single book to be so singularly compelling that everyone who passes by has to stop to look.
“The Iranians had been singularly reluctant to propose a date,” a diplomat said.
Viewed from outside my head it is a singularly dull and uneventful day, but inside my head … aaah.
mid-14c., "alone, apart; being a unit; special, unsurpassed," from Old French singuler "personal particular; distinctive; singular in number" (12c., Modern French singulier) or directly from Latin singularis "single, solitary, one by one, one at a time; peculiar, remarkable," from singulus (see single (adj.)). Meaning "remarkably good, unusual, rare, separated from others (by excellence), uncommon" is from c.1400 in English; this also was a common meaning of Latin singularis.