firm Synonyms - page 2

unmovable unmoved undertaking undaunted toughened unconditional true true-blue unappealable unbending uncompromising unconquerable unrelenting substantial rheumatic sinewy single-minded soldered solidified solidify solidly sound strict stabler settled set serious rigorist rigorous robust rocky rooted safe sealed self-assertive semisolid stalwart stanch standing stipulated stony stout stout-hearted strengthened securely stringent strongly strong-minded stiff-necked stiffish