1) Articulate 2) Avoid mumbling 3) Enounce 4) Express or state clearly 5) Not mumble 6) Pronounce 7) Sound out 8) Speak articulately 9) Speak distinctly 10) To announce, proclaim 11) To articulate, pronounce 12) To make sounds clearly 13) Utter in an articulate way 14) Vocalize 1) Articulate 2) Devoice 3) Enounce 4) Labialise 5) Labialize 6) Mispronounce 7) Nasalise 8) Nasalize 9) Palatalise 10) Palatalize 11) Pronounce 12) Say 13) Sibilate 14) Subvocalise 15) Subvocalize 16) Vocalize 17) Vowelise 18) Vowelize 
• (v. t.) To make distinctly audible; to utter articulately; to pronounce; as, to enunciate a word distinctly. • (v. i.) To utter words or syllables articulately. • (v. t.) To make a formal statement of; to announce; to proclaim; to declare, as a truth.
E·nun'ci·ate transitive verb [ imperfect & past participle Enunciated ; present participle & verbal noun Enunciating .] [ Latin enuntiatus , - ciatus , past participle of enuntiare , -ciare . See Enounc...
pronounce (words)/express a theory 
verb express or state clearly
[SAT terms] express or state clearly