powerful and effective language; "his eloquence attracted a large congregation"; "fluency in spoken and written English is essential"; "his oily smoothness concealed his guilt from the police"
suggestive of or tending to moral looseness; "lewd whisperings of a dirty old man"; "an indecent gesture"; "obscene telephone calls"; "salacious limericks"
any of the various theories or doctrines or philosophical systems that attempt to explain the phenomena of the universe in terms of some immanent force or energy