1. Attractively old-fashioned (but not necessarily authentic)
   - old-time, quaint

See also: fashionable, stylish

• wave theory
• wave theory of light
• wave train
• substantive dye
• substantively
• substantivise
• substantivize
• substation
• substituent
• substitutability
• substitutable
• substitute
• substitute teacher
• substituting
• substitution
• substitution class
• substitutional
• substitutionary
• substitutive
• substract
• substrate
• substratum
• substring
• substructure
• subsume