Synonyms of the word

assertive

• adj. Boldly self-assured; confident without being aggressive.

aggressive

• adj. Tending or disposed to aggress; characterized by aggression; making assaults; unjustly attacking.
• adj. (programming) Of code optimization techniques: exploiting every opportunity to be applied.

cocky

• n. Abbreviation of cockatoo; used when pretending to talk to such a bird, as in "hello cocky".
• n. (Australia, New Zealand, colloquial) A cockatoo farmer.
• n. (New Zealand, informal) A sheep farmer.
• adj. Overly confident, arrogant and boastful.

emphatic

• adj. Characterized by emphasis; forceful.
• adj. Stated with conviction.
• adj. (grammar) Belonging to a set of English tense forms comprising the auxiliary verb do + an infinitive without…
• adj. (phonology) Belonging to a series of obstruent consonants in several Semitic languages that are distinguished…
• n. (phonology) An emphatic consonant.
• n. (linguistics) A word or phrase adding emphasis, such as "a lot" or "really".

forceful

• adj. With assertive force; powerful.

imperative

• adj. essential.
• adj. (grammar) of, or relating to the imperative mood.
• adj. (computing theory) Having a semantics that incorporates mutable variables.
• adj. Expressing a command; authoritatively or absolutely directive.
• n. (uncountable, grammar) The grammatical mood expressing an order (see jussive). In English, the imperative…
• n. (countable, grammar) A verb in imperative mood.
• n. (countable) An essential action, a must: something which is imperative.

self-assertive

• adj. determined to advance one's own personality or views.