[ابو بيشو]

Sec 2, Unit 6. how to make the comparative and superlative form of the adjectives which end with "ly" like friendly, silly, lovely, kindly, motherly,etc.


For many two-syllable adjectives, both the -er/-est form and the more/most form are possible. For some two-syllable adjectives, only the more/most form is possible. Check a good dictionary to be sure.
For two-syllable adjectives that end in y preceded by a consonant, to make the -er/-est form we change the y to i and add the -er or -est ending. For example, tidy - tidier - tidiest. This rule works for the followng adjectives, and perhaps others. Check a dictionary:

tidy, busy, dirty, dry, early, easy, empty, funny, pretty, happy, heavy, ready, sleepy, ugly (also more/most ugly); also for opposites beginning with un- : untidy, unhappy, uneasy

However, the comparative/superlative of shy is shyer - shyest.

LDOCE does not give a comparative form of motherly, and I think it would be unusual to compare this adjective. I would use more motherly.

Kindly is old-fashioned. I would use kind - kinder - kindest. LDOCE does not give comparative/superlative forms, but Merriam-Webster Third New International Unabridged gives the comparative/superlative as -er/-est. (The y should change to i).