on the — side
• tending towards being —; rather —.
• "these shoes are a bit on the tight side"
on the side
• in addition to one's regular job or as a subsidiary source of income.
• "no one lived in the property, but the caretaker made a little on the side by letting rooms out"
• secretly, especially with regard to a relationship in addition to one's legal or regular partner.
• "Brian had a mistress on the side"
• served separately from the main dish.
• "a club sandwich with French fries on the side"
side by side
• (of two or more people or things) close together and facing the same way.
• "on we jogged, side by side, for a mile"
Similar:
alongside (each other),
beside each other,
abreast,
level,
shoulder to shoulder,
cheek by jowl,
together,
close together,
