say it: uhn-FREND-lee
unfriendly is an adjective meaning "not easy to understand or use". It carries 4 recorded senses.
not disposed to friendship or friendliness
“an unfriendly coldness of manner”
“an unfriendly action to take”
very unfavorable to life or growth
“a hostile climate”
“an uncongenial atmosphere”
“an uncongenial soil”
“the unfriendly environment at high altitudes”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for unfriendly come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.