Endeavour
Try
Synonyms Try, venture, aspire, seek, strive, labour, work hard, exert oneself, do one's best, give one's all, work at, slog away, have a go at, have a stab at, do one's damnedest, bend over backwards, bust a gut, essay, attempt, undertake, aim, set out, struggle, toil, try hard, apply oneself, do one's utmost, be at pains, try one's hand at, give something a whirl, have a shot at, give something one's best shot, go all out, break one's neck, and move heaven and earth.
Attempt
Striving
Synonyms Striving, labouring, labour, hard slog, exertion, industry, sweat, and tears, graft, travail, struggling, struggle, hard work, effort, application, pains, blood, elbow grease, (hard) yakka, and moil.
Undertaking
Example Sentences
Their endeavor requires careful planning ahead.
She embarked on a new endeavor recently.
Success in this endeavor is possible.
He will support your ambitious endeavor.