Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unlooked-for is an adjective meaning "not anticipated". It carries one recorded sense.
not anticipated
“unanticipated and disconcerting lines of development”
“unforeseen circumstances”
“a virtue unlooked-for in people so full of energy”
“like a bolt out of the blue”
“unseen problems”
Definitions, synonyms and semantic relations for unlooked-for come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.