Antonyms of adj dismissible

1 sense of dismissible

Sense 1
dismissible -- (subject to dismissal; "appointed and removable by the mayor")

INDIRECT (VIA removable) -> irremovable -- (incapable of being removed or away or dismiss; "irremovable boulders"; "irremovable obstacles")

Similarity of adj dismissible

1 sense of dismissible

Sense 1
dismissible -- (subject to dismissal; "appointed and removable by the mayor")
       => removable (vs. irremovable) -- (capable of being removed or taken away or dismissed; "a removable cord"; "removable partitions")