Cecil sits next to 3 phonetic neighbors — Cyril, Basil, and Percival are the closest matches by sound. Most share Cecil's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blind"
"from the Roman gens Terentia"
"God has remembered"
"peaceful ruler"
"modern coined name, variant of Kyson"
"son of the south"
"who is like God?"
"rye land; land where rye grows"
"summit, top"
"bright, clear, famous"
"bear"
"from the steep place"
"fair, attractive"
"wide island"
"place of lime trees"
"to move swiftly, energetic forward movement"
"alder grove"
"powerful (alternative interpretation)"
"people of gentle birth"
"bold, riot"
"powerful in battle"
Similar sound: These names share phonetic patterns with Cecil — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Cecil.
Rhythm: Cecil is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.