5

With two, I am something you have from birth.

With three, I am a time to celebrate their worth.

With four, I am a popular dressing or spread.

With all five, some people may call me a head.

Inspired by tyobrien's riddle format.

DenverCoder1
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1 Answers1

7

Perhaps:

ma - A word for mother
may - May Day is a common celebration
mayo - Shortened form for mayonnaise
mayor - A person in charge/head of a city

Kralc
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