1. Heartily friendly and congenial
   - hail-fellow, hail-fellow-well-met

See also: comrade, comradeliness, friendly

• letter of the alphabet
• letter opener
• letter paper
• letter security
• letter stock
• letter telegram
• letter writer
• letter-perfect
• lettercard
• lettered
• letterer
• letterhead
• lettering
• letterman
• letterpress
• letters
• letters of administration
• letters of marque
• letters patent
• letters testamentary
• letterset printing
• letting
• letting down
• Lettish
• lettre de cachet