Hazel sits next to 4 phonetic neighbors — Basil, Laurel, and Jasper are the closest matches by sound. Most share Hazel's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hazel tree"
"son of Piers (Peter)"
"dark blue"
"enclosed pasture by a river"
"God is gracious"
"determined guard, resolute protector"
"star"
"little warrior, of Mars"
"of the forest, woodland dweller"
"visitor, pilgrim"
"brave warrior"
"fire, blaze (folk association)"
"Italian form of John"
"love, romantic feeling"
"modern American creation, variant of Jayden"
"from Hugh's meadow, Hucc's woodland clearing"
"heavy club weapon"
"flower sound"
"slender, lean, narrow"
"lean, slender warrior"
"dweller by the mills, mill worker"
Similar sound: These names share phonetic patterns with Hazel — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Hazel.
Rhythm: Hazel is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.