The term 'less lax' can be described by three words: 'sterner', 'tauter', and 'STRICTER'. All three words refer to a situation or attitude that is more serious, rigid, or strict. Sterner implies a more severe attitude, while tauter suggests a more tense or tight atmosphere, and STRICTER implies more rigid rules or regulations. Together, these three words describe a situation that is less relaxed and more demanding.